M-3=12.8

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Solution for M-3=12.8 equation: 


Simplifying
M + -3 = 12.8

Reorder the terms:
-3 + M = 12.8

Solving
-3 + M = 12.8

Solving for variable 'M'.

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

Add '3' to each side of the equation.
-3 + 3 + M = 12.8 + 3

Combine like terms: -3 + 3 = 0
0 + M = 12.8 + 3
M = 12.8 + 3

Combine like terms: 12.8 + 3 = 15.8
M = 15.8

Simplifying
M = 15.8

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