Pre-Algebra Examples

$5 m + 2 n$ , $n - 3 m$ ; and $7 - 3 n$

Step 1

Add the expressions.

$5 m + 2 n + n - 3 + 7 - 3 n$

Step 2

Add $2 n$ and $n$ .

$5 m + 3 n - 3 + 7 - 3 n$

Step 3

Combine the opposite terms in $5 m + 3 n - 3 + 7 - 3 n$ .

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Step 3.1

Subtract $3 n$ from $3 n$ .

$5 m + 0 - 3 + 7$

Step 3.2

Add $5 m$ and $0$ .

$5 m - 3 + 7$

Step 4

Add $- 3$ and $7$ .

$5 m + 4$