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Solve for $n$ . $\newline$ $-10 = n + (-9)$ $\newline$ $n =$ _____

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Solve equations: mixed review

Full solution

Q. Solve for

n

.

\newline

-10 = n + (-9)

\newline

n =

_____

Add $9$ to both sides: To isolate the variable $n$ , we need to get $n$ on one side of the equation by itself. We can do this by adding $9$ to both sides of the equation to cancel out the $-9$ that is added to $n$ .
$-10 = n + (-9)$
Add $9$ to both sides:
$-10 + 9 = n + (-9) + 9$
Simplify both sides: Now, we simplify both sides of the equation. $\newline$ $-10 + 9 = n + 0$ $\newline$ $-1 = n$
Isolate and find $n$ : We have isolated $n$ and found its value. $n = -1$

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