Add: -7mn + 5, 12mn +2, -2mn - 3
Answers
Answered by
0
Answer:
Add:-– 7mn + 5, 12mn + 2, 9mn – 8, – 2mn – 3
12mn-4
Step-by-step explanation:
= – 7mn + 5 + 12mn + 2 + (9mn – 8) + (- 2mn – 3)
= – 7mn + 5 + 12mn + 2 + 9mn – 8 – 2mn – 3
= – 7mn + 12mn + 9mn – 2mn + 5 + 2 – 8 – 3
= mn (-7 + 12 + 9 – 2) + (5 + 2 – 8 – 3)
= mn (- 9 + 21) + (7 – 11)
= mn (12) – 4
= 12mn – 4
Answered by
0
Answer:
7mn + 10
Step-by-step explanation:
-7mn + 5 + 12mn + 2 + (-2mn - 3)
= -7mn + 5 + 12mn + 2 + 2mn + 3
= 14mn - 7mn + 10
= 7mn + 10
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