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2014-06-01T22:49:05-03:00
Olá, Matheustablete5!

10x - 2 = 7x
10x - 7x = 2
3x = 2
x =  \frac{2}{3}
1 5 1
2014-06-01T22:49:41-03:00
10x - 2 = 7x
10x - 7x = +2
         3x = 2
           x = 2 / 3
1 4 1