Question

3. ( x + 4 ) + 5 ( X + 2 ) = 2X + 12

Answer 1

Oi,

Resolução

3. ( x + 4 ) + 5 ( X + 2 ) = 2X + 12
3x + 12 + 5x + 10 = 2x + 12
3x + 5x - 2x = 12 - 12 - 10
6x = - 10
x = - 10/6
x = - 5/3

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Answer 2

3x+12+5x+10=2x+12
3x+5x-2x=12-10-12
6x=-10
x=$\frac{-10}{6}$ : 2
x=$\frac{-5}{3}$