Answer:
m=5
Step-by-step explanation:
1) Add 2m on both sides simplify
(-5+9m-20=20)
2) Add 20 on both sides to simplify
(-5+9m=40)
3) Add 5 on both sides to simplify
(9m=45)
4) Divide by 9 on both sides to isolate m.
(m=5)
5) You have approached your solution.
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