Question

7(m-12)=5m a) -7 b) 6 c) 42 d) -42

Answer 1

$7(m-12)=5m \\ \\ 7m - 84 = 5m \\ \\ -84 = 5m - 7m \\ \\ -84 = -2m \\ \\ \frac{-84}{-2} = m \\ \\ \frac{84}{2} = m \\ \\ 42 = m \\ \\ m = 42 \\ \\ Answer: \fbox {m = 42}$

Answer 2

7(m-12) = 5m

7m - 84 = 5m

2m - 84 = 0

2m = 84

m = 42

The answer is C) 42