Question

- 7mn + 5 + 12mn + 2 + 9mn - 8 + (- 2mn)-3​

Answer 1

Answer:

(−7mn+5)+(12mn+2)+(9mn−8)+(−2mn−3)

=−7mn+5+12mn+2+9mn−8−2mn−3

=12mn−4

Answer 2

Answer:

12mn-4

Step-by-step explanation:

(−7mn+5)+(12mn+2)+(9mn−8)+(−2mn−3)

=−7mn+5+12mn+2+9mn−8−2mn−3

=12mn−4