# How do you solve 7s-29=-15?

Jan 20, 2017

$s = 2$

#### Explanation:

Step 1: Have only the 'parts' with s in them on the left of the = and $\text{ }$everything else on the other side.

Step 2: Have only s on the left of = and everything else on the
$\text{ }$other side.
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Step 1:

Add $\textcolor{red}{29}$ to both sides

color(green)(7s-29=-15" "->" "7s-29color(red)(+29)=-15color(red)(+29

$\text{ } \textcolor{g r e e n}{7 s + 0 = 14}$

Step 2:
Multiply both sides by $\textcolor{red}{\frac{1}{7}}$

$\text{ } \textcolor{g r e e n}{\frac{7}{\textcolor{red}{7}} s = \frac{14}{\textcolor{red}{7}}}$

But $\frac{7}{7} = 1 \mathmr{and} \frac{14}{7} = 2$ giving:

$\text{ } \textcolor{g r e e n}{s = 2}$