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02-12-2015
Mathematics

contestada

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

Respuesta :

Exvited Exvited

04-01-2016

[tex]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}[/tex]

Answer Link

04-01-2016

7(m-12) = 5m

7m - 84 = 5m

2m - 84 = 0

2m = 84

m = 42

The answer is C) 42

Answer Link

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