Factor -ab+ac

$- a b + a c$

Step 1

Factor $- a$ out of $- a b + a c$ .

Factor $- a$ out of $- a b$ .

$- a (b) + a c$

Factor $- a$ out of $a c$ .

$- a (b) - a (- 1 c)$

Factor $- a$ out of $- a (b) - a (- 1 c)$ .

$- a (b - 1 c)$

$- a (b - 1 c)$

Step 2

Rewrite $- 1 c$ as $- c$ .

$- a (b - c)$

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