Math, asked by jhaprafulsagar60, 7 months ago

add
(c) -7mn + 7, 12mn - 5,4mn + 7, --2mn - 5

Answers

Answered by vineelavinny510

3

Answer:

21mn+4

Step-by-step explanation:

$7mn + 7 + 12mn - 5 + 4mn + 7 - 2mn - 5 \\ 7mn + 12mn + 4mn - 2mn + 7 - 5 + 7 - 5 \\ 23mn - 2mn + 2 + 2 \\ = 21mn + 4$

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