1)
((3/5)/(16/9)x+12x-36= x=2
(27/80)(2)=54/81+24-36=
54/81-12/1=54-972/81=918/81
R=918/81
x=-2
(27/80)(-2)=-54/80-24-36=
-54/80-60/1=574-4800/80=-4746/80
R=4746/80
2)
13x-35+2/7-15/8= x=3
13(3)-35+2/7-15/8=
39-35+2/7-15/8=
(2/7)-(15/8)=89/56
4+(89/56)=224-89/56=135/56
R=1358/56
x=-3
13(-3)-35+2/7-15/8=
-39-35+2/7-16/8=
74+2/7-16/8=16-106/56=89/56
520/7-16/8=44160-112/56=4048/56
R=4048/56
3)
21x-16x-18+23-65+79-45x= x=-4
21(-4)-16(-4)-18+23-65+79-45(-4)=
-84-64-18+23-65+79-180
20+5+14-180=
25-166=-141
R=-141
x=5
21(5)-16(5)-18+23-65+79-45(5)=
105-80-18+23-65+79-225=
25+5+14-225=-181
R=-181
4)
((9/8)(7/14)/(23/6))x+(1/5)x-19= x=-6
(63/112)/(23/6)=378/2576
378/2576(-6)=2268/2576
2268/2576+(1/5)=11340+2576/12880=13916/12880
(13916/12880)(-6)-19=83496-244720/12880=161224/12880
R=161224/12880
x=3
(378/2576)(3)=1134/2576+1/5=5670+2576/12880=8246/12880
8246/12880(3)=24738/12880
24738/12880-19=24738-244720/12880=-219982/12880
R=219982/10880
5)
(23/4)(65/6)+(2/3)x-(16/5)x+22= x=5
(23/4)(65/6)+(2/3)(5)-(16/5)(5)+22=
1495/24+10/3-805+22=
4485+2470/72=4725/75-80/5=23625-6000/375=17625/375
17625/375+22=17625+8250/375=25875/375
R=25875/375
x=-7
1495/24+2/3(-7)
1495/24-14/3=4485-336/72=4149/72
4149/72-16/5=20745-1152/360=19593/360
19593/360-(-7)=19593-2520/360=17073/360
17073/360+22=17073+7920/360=24993/360
R=24993/360
domingo, 30 de agosto de 2009
domingo, 23 de agosto de 2009
Primer tarea
1)
(2)(3)(-5)(-2)(3)(-7)(8)=10.080
procedimiento:
(6)(10) (-21) (8)
(60) (168)= 10.080
2)
(5)(-5)(3)+2+4-7-12+45-33+75=149
procedimiento:
(-25) (3) 75+6 -19+12 +75
81-7 +75
74+75=149
3)
-134-12+13+54-65+67(2)(-3)(4)=5.160
procedimiento:
+146+67+2(-6)(4)
213-12(4)
215(-24)=5.160
4)
12-44+36-76+89-55+243-74=131
procedimiento:
-32-40+34+169
-72+203=131
5)
(2)(3)(-4)(5)(-6)(7)(-8)(9)(0)=-31.488
procedimiento:
(6)(-20)(-42)(-72)(0)
(-120)(+2.624)=-31.488
6)
(12/5)(6/3)+(4/9)(8/11)=7.668/1.485
procedimiento:
(72/15)+(36/99)=7.128+540/1.485=7.668/1.485
7)
14/3+15/2-6/4=32/3
procedimiento:
28+45/6=73/6
73/6-6/4=292-36/24=256/24
256/24=128/12=64/6=32/3
8)
(((12/5)(15/4)/(13/7)(16/9))(-5))+1/2=21.575/10.400
procedimiento:
(170/20)/(208/63)=(10.710/4.160)
(10.710/4.160)-(5/5)=53.550-20.800/20.800=32.750/20.800
(32.750/20.800)+1/2=65.500+20.800/41.600=86.300/41.600=43.150/20.800=
21.575/10/400
9)
(13/22)/(43/15)-16/7=13.771/6.622
procedimiento:
(195/946)-16/7=(1.365-15.136/6.622)=13.771/6.622
10)
((9/8)(8/6)/(25/4))+((13/45)(45/2))-16/4=42.795/675
procedimiento:
(72/48)/(25/4)=288/1.200
(13/45)(45/2)=585/90
(288/1.200)+(585/90)=25.920+702.000/108.000=727.920/10.800
(727.920/10.800)-16/4=2.911.680-172.800/43.200=2.738.880/43.200=1.369.440/21.600=
684.720/10.800=342.360/5.400=171.180/2.700=85.590/1.350=42.795/675
11)
(33/17)(45/12)+3/5-18/7+16/9-25/5=
procedimiento:
1.485/208
3/5-18/7=21-90/35=-69/35
16/9-25/5=80-225/45=-145/45
1.485/200+-69/35=51.975-13.800/38.175=38.175/7.000+-145/45=
1.717.875-1.015.000/315.000=702.875/315.000
(2)(3)(-5)(-2)(3)(-7)(8)=10.080
procedimiento:
(6)(10) (-21) (8)
(60) (168)= 10.080
2)
(5)(-5)(3)+2+4-7-12+45-33+75=149
procedimiento:
(-25) (3) 75+6 -19+12 +75
81-7 +75
74+75=149
3)
-134-12+13+54-65+67(2)(-3)(4)=5.160
procedimiento:
+146+67+2(-6)(4)
213-12(4)
215(-24)=5.160
4)
12-44+36-76+89-55+243-74=131
procedimiento:
-32-40+34+169
-72+203=131
5)
(2)(3)(-4)(5)(-6)(7)(-8)(9)(0)=-31.488
procedimiento:
(6)(-20)(-42)(-72)(0)
(-120)(+2.624)=-31.488
6)
(12/5)(6/3)+(4/9)(8/11)=7.668/1.485
procedimiento:
(72/15)+(36/99)=7.128+540/1.485=7.668/1.485
7)
14/3+15/2-6/4=32/3
procedimiento:
28+45/6=73/6
73/6-6/4=292-36/24=256/24
256/24=128/12=64/6=32/3
8)
(((12/5)(15/4)/(13/7)(16/9))(-5))+1/2=21.575/10.400
procedimiento:
(170/20)/(208/63)=(10.710/4.160)
(10.710/4.160)-(5/5)=53.550-20.800/20.800=32.750/20.800
(32.750/20.800)+1/2=65.500+20.800/41.600=86.300/41.600=43.150/20.800=
21.575/10/400
9)
(13/22)/(43/15)-16/7=13.771/6.622
procedimiento:
(195/946)-16/7=(1.365-15.136/6.622)=13.771/6.622
10)
((9/8)(8/6)/(25/4))+((13/45)(45/2))-16/4=42.795/675
procedimiento:
(72/48)/(25/4)=288/1.200
(13/45)(45/2)=585/90
(288/1.200)+(585/90)=25.920+702.000/108.000=727.920/10.800
(727.920/10.800)-16/4=2.911.680-172.800/43.200=2.738.880/43.200=1.369.440/21.600=
684.720/10.800=342.360/5.400=171.180/2.700=85.590/1.350=42.795/675
11)
(33/17)(45/12)+3/5-18/7+16/9-25/5=
procedimiento:
1.485/208
3/5-18/7=21-90/35=-69/35
16/9-25/5=80-225/45=-145/45
1.485/200+-69/35=51.975-13.800/38.175=38.175/7.000+-145/45=
1.717.875-1.015.000/315.000=702.875/315.000
jueves, 20 de agosto de 2009
ejercicio
1
(2)5+3(-6)-(2)(4)5=11
2
((15)/3)+2(18)-6-3-4=46
3
(-2)(-4)(-5)(-3)(1)(7)=840
4
(2)(-5)(11)(-2)(8)(-5)=-8,800
5
2+3-5-6+7+18-39-65=-85
6
(((5)(3))/3)+2-5(8)-4(-4)=48
7
((49)/7)(-6)+2-3+4(5)(-2)=450
(2)5+3(-6)-(2)(4)5=11
2
((15)/3)+2(18)-6-3-4=46
3
(-2)(-4)(-5)(-3)(1)(7)=840
4
(2)(-5)(11)(-2)(8)(-5)=-8,800
5
2+3-5-6+7+18-39-65=-85
6
(((5)(3))/3)+2-5(8)-4(-4)=48
7
((49)/7)(-6)+2-3+4(5)(-2)=450
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