Question

- x + 3= 2x + 1; -3x + 8= 5x +16; 5x +8 = 4 + 7x ??
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Answer 1

Resposta:

* -x -2x= 1-3

-3x= -2 .(-1)

3x= 2

x= 2/3

*. -3x -5x = 16-8

-8x = 8

x= - 1

* ,5x -7x = 4 -8

-2x = -4

x= 2