Respostas

2014-08-17T19:01:40-03:00
17x+50=7x
17x-7x=-50
10x=-50
x=  \frac{-50}{10}
x= -5
2014-08-17T19:05:51-03:00
17x + 50 = 7x

17x - 7x = - 50

10x = - 50

x = -50/10

x = -5