Math, asked by aditipurandare789, 16 days ago

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

Answers

Answered by preetisinghallavanya

3

Answer:

21 mn

Step-by-step explanation:

drop some thanks please

Answered by asma9t7

0

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

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

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

=26mn-4

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