20=M-8

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Solution for 20=M-8 equation: 


Simplifying
20 = M + -8

Reorder the terms:
20 = -8 + M

Solving
20 = -8 + M

Solving for variable 'M'.

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

Add '-1M' to each side of the equation.
20 + -1M = -8 + M + -1M

Combine like terms: M + -1M = 0
20 + -1M = -8 + 0
20 + -1M = -8

Add '-20' to each side of the equation.
20 + -20 + -1M = -8 + -20

Combine like terms: 20 + -20 = 0
0 + -1M = -8 + -20
-1M = -8 + -20

Combine like terms: -8 + -20 = -28
-1M = -28

Divide each side by '-1'.
M = 28

Simplifying
M = 28

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