7M-9=2M+31

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Solution for 7M-9=2M+31 equation:


Simplifying
7M + -9 = 2M + 31

Reorder the terms:
-9 + 7M = 2M + 31

Reorder the terms:
-9 + 7M = 31 + 2M

Solving
-9 + 7M = 31 + 2M

Solving for variable 'M'.

Move all terms containing M to the left, all other terms to the right.

Add '-2M' to each side of the equation.
-9 + 7M + -2M = 31 + 2M + -2M

Combine like terms: 7M + -2M = 5M
-9 + 5M = 31 + 2M + -2M

Combine like terms: 2M + -2M = 0
-9 + 5M = 31 + 0
-9 + 5M = 31

Add '9' to each side of the equation.
-9 + 9 + 5M = 31 + 9

Combine like terms: -9 + 9 = 0
0 + 5M = 31 + 9
5M = 31 + 9

Combine like terms: 31 + 9 = 40
5M = 40

Divide each side by '5'.
M = 8

Simplifying
M = 8

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