Question

calcule: 3(x+5)-(x+7)=4(1-x)
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Answer 1

Resposta:

$3(x + 5) - (x + 7) = 4(1 - x) \\ 3x + 15 - x - 7 = 4 - 4x \\ 3x - x + 4x = 4 - 15 + 7 \\ 6x = - 4 \\ x = \frac{ - 4}{6}$