Question

Qual a solução de 3x - M = 2 m ?
a) x = m
b) x = 2m
c) x = m/3
d) x = 3/m
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Answer 1

Letra A) X = m

$3x - m = 2m \\ 3x = 2m + m\\3x = 3m \\ x = m$

Answer 2

$3x - m = 2m\\3x = 2m + m\\3x = 3m\\x = m \quad (a)$