# How do you solve -52+m=84?

Jul 15, 2016

$m = 136$

#### Explanation:

$\textcolor{b l u e}{\text{Shortcut method}}$

Take the 52 to the other side of the = and change its sign

$m = 84 + 52 = 136$

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$\textcolor{b l u e}{\text{Using first principles from which the shot cut is derived}}$

Given:$\text{ } \textcolor{g r e e n}{- 52 + m = 84}$

Add $\textcolor{red}{52}$ to both sides

$\textcolor{g r e e n}{- 52 \textcolor{red}{+ 52} + m = 84 \textcolor{red}{+ 52}}$

But $- 52 + 52 = 0$

$0 + m = 84 + 52 = 136$

$m = 136$