Respostas

2014-01-08T23:22:08-02:00
2x + 1  -   x  =  1   +  8   
        5    10      2       5

mmc (2, 5, 10) = 10

20x + 2 - x = 5 + 16
20x - x = 5 + 16 - 2
19x = 19
x = 19 ÷ 19
x = 1
2 3 2