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3 votes
(5-3m)-3=-30 how do I work this out?

User Brucek
by
4.6k points

2 Answers

4 votes
distribute -3 to 5 and -3m to get

15 + 9m = -30

you do inverse operations to the other side so you would do

15 + 9m = -30
-15. -15

and then you would get

9m= -30

divide by 9 on each side

9m = -30
——. ——
9 9

m= -3.3 (repeated decimal)
User Jonathan Gibbons
by
4.9k points
6 votes

Answer:
m=32/3

Explanation:

1) Simplify both sides of the equation:
5+-3m+-3=-30


(-3m)+(5+-3)=-30 (Combine Like Terms)


-3m+2=-30

2) Subtract 2 from both sides:
-3m+2-2=-30-2


-3m=-32

3) Divide both sides by 3:
-3m/-3 = -32/-3

Get your answer:
m=32/3

User Mark Rabey
by
5.3k points