Respostas

2014-07-18T00:36:01-03:00
1.a)
x/3 = 5
x=5x3
x=15

b)
x/2 = -8
x=-8x2
x=-16

c)
x/2=-9
x=-9x2
x=-18

d)
x/5 = 12
x=12x5
x=60

2.a)
3x/4=9
3x=9x4
3x=36
x=36/3
x=12

b)
2x/5 = -4
2x=-4x5
2x=-20
x=-20/2
x= -10

c)
2x/3 =-10
2x=-10x3
2x=-30
x=-30/2
x=-15


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