M+7=20-4

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Solution for M+7=20-4 equation: 


Simplifying
M + 7 = 20 + -4

Reorder the terms:
7 + M = 20 + -4

Combine like terms: 20 + -4 = 16
7 + M = 16

Solving
7 + M = 16

Solving for variable 'M'.

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

Add '-7' to each side of the equation.
7 + -7 + M = 16 + -7

Combine like terms: 7 + -7 = 0
0 + M = 16 + -7
M = 16 + -7

Combine like terms: 16 + -7 = 9
M = 9

Simplifying
M = 9

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