Respostas

2014-03-13T12:57:33-03:00
A) x= -10 + 8
x= -2

b)-3x+4x= -9 -2
x= -11

c)350x-100x = 750+500
250x= 1250
x= 5

d) x= 75/353
x= 2,14
1 5 1
2014-03-13T12:59:59-03:00
A) x-8=-10
x=-10+8
x=-2

b) 2-3x=-9-4x
-3x +4x = -9-2
x= -11

c)350x-500=100x+750
350x-100x=750+500
250x=1250
x=1250/250
x=5

d)35x=75
x=75/35
x=2,14
1 5 1