Algebra Examples

$9 m + 7 n$ if $m = - 7$ and $n = 4$

Step 1

Replace the variable $m$ with $- 7$ in the expression.

$9 (- 7) + 7 n$

Step 2

Replace the variable $n$ with $4$ in the expression.

$9 (- 7) + 7 (4)$

Step 3

Simplify each term.

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Step 3.1

Multiply $9$ by $- 7$ .

$- 63 + 7 (4)$

Step 3.2

Multiply $7$ by $4$ .

$- 63 + 28$

Step 4

Add $- 63$ and $28$ .

$- 35$