Respostas

2014-06-07T13:34:50-03:00
7x-8=27-3x
7x+3x=27+8
10x=35
x=3,5
(axo)
2014-06-07T13:36:57-03:00
8x - 8 - x = 3 (1+8-x)
8x-x+x= 3 (1+8) +8
8x = 35
x= 4,375