Respostas

2013-12-03T01:18:10-02:00
7 (x + 2) = 35 + 5 (x - 1,2)
7x + 14 = 35 + 5x - 6
7x - 5x = 35 - 6 - 14
2x = 15
x = 15 ÷ 2
x = 7,5