Simplify 2ab+4ac-5c-6c+7ab

$2 a b + 4 a c - 5 c - 6 c + 7 a b$

Add $2 a b$ and $7 a b$ .

$4 a c - 5 c - 6 c + 9 a b$

Subtract $6 c$ from $- 5 c$ .

$4 a c - 11 c + 9 a b$

Simplify the expression.

Move $- 11 c$ .

$4 a c + 9 a b - 11 c$

Reorder $4 a c$ and $9 a b$ .

$9 a b + 4 a c - 11 c$

$9 a b + 4 a c - 11 c$

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