Question

Add: -7mn + 5, 12mn + 2, 9mn -8, - 2mn - 3
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Answer 1

Answer:

First change them in same variable

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

=12mn+4

Answer 2

Question:

Add: -7mn + 5, 12mn + 2, 9mn -8, - 2mn - 3

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Answer:

Rearranging Common Factors:

- 7mn + 12mn + 9mn - 2mn + 5 + 2 - 8 - 3

= 12mn - 4

M a r k   B r a i n l i e s t  i f  h e l p e d ! !

Tq dear frnd!!