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Does anyone know the step by step for this 9(m +5) - 3(m - 2) = 8m + 31

2 Answers

4 votes
1. distribute the left side of the equation
9m+45-3m+6 (make sure to distribute the negative sign)=8m+31
2. put all the variable terms on one side and the constants on the other
-2m=-20
3. divide by -2
m=10
User Avihoo Mamka
by
4.9k points
2 votes

Answer :

Given :

  • 9(m + 5) - 3(m - 2) = 8m + 31

We have to find value of m
.

➠ 9(m + 5) - 3(m - 2) = 8m + 31

➠ 9m + 45 - 3m + 6 = 8m + 31

➠ 9m - 3m + 45 + 6 = 8m + 31

➠ 6m + 51 = 8m + 31

➠ 51 - 31 = 8m - 6m

➠ 20 = 2m

➠ m = 20/2

m = 10

Hope It Helps!

User Dmitry Malugin
by
4.3k points