mgchelo198 mgchelo198
  • 21-09-2016
  • Mathematics
contestada

What is the answer to this -3m=-9+-2m

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candystarlover4
candystarlover4 candystarlover4
  • 21-09-2016
1. Simplify -9 + -2m to -9 - 2m

-3m = -9 - 2m

2. 
Add 2m to both sides

-3m + 2m = -9

3. 
Simplify -3m + 2m to -m

-m = -9

4. 
Multiply both sides by −1

m = 9

Done! :) our answer is m = 9
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