Respostas

2014-07-14T19:32:41-03:00
A)6x=6
x=6/6
x=1

B)4x=3x+9
4x-3x=9
1x=9
x=9/1
x=9

C)5x+1=16
5x=16-1
5x=15
x=15/5
x=3

D)10x-2=7x
10x-7x=2
3x=2
x=2/3
1 4 1