Question

simplify combining like terms :
$- 7mn \: \: + \: 5 \: \: + \: \: 12mn \: \: + \: 3 \: + \: 9mn \: - \: 7 \: - \: 2mn \: - 3$
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Answer 1

Answer:

-7mn+5+12mn+3+9mn-7-2mn-3

= 12mn-4

I hope my answer helps you ☺☺

Answer 2

Step-by-step explanation:

$- 7mn + 5 + 12mn + 3 + 9mn - 7 - 2mn - 3 \\ \\ = - 9mn + 21mn - 10 + 8 \\ \\ = 12mn - 2$