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(3m – 9) -- (-10m – 9)
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(3m – 9) -- (-10m – 9)

User Malballah
by
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2 Answers

9 votes

Answer:

the answer is 13m

Explanation:

remove parenthesis : 3m – 9 + 10m – 9

simplify : 3m - 9 +10 +9 = 13m

User Brigadier
by
3.9k points
12 votes

Answer:

-13m - 18

Explanation:

(3m - 9) -- (-10m - 9 )

Subtract the 3m to the -10m, and add the 9's together.

User Rjschnorenberg
by
2.7k points
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