Respostas

2014-06-01T18:36:23-03:00
7x+2=10+5x
7x-5x=10-2
2x=8
x= 8:2
x=4
2014-06-01T18:37:09-03:00
7x+2=10+5x
7x-5x=10-2
2x=8
x=8/2
x=4