M-6.8=3.9+12.5

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Solution for M-6.8=3.9+12.5 equation: 


Simplifying
M + -6.8 = 3.9 + 12.5

Reorder the terms:
-6.8 + M = 3.9 + 12.5

Combine like terms: 3.9 + 12.5 = 16.4
-6.8 + M = 16.4

Solving
-6.8 + M = 16.4

Solving for variable 'M'.

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

Add '6.8' to each side of the equation.
-6.8 + 6.8 + M = 16.4 + 6.8

Combine like terms: -6.8 + 6.8 = 0.0
0.0 + M = 16.4 + 6.8
M = 16.4 + 6.8

Combine like terms: 16.4 + 6.8 = 23.2
M = 23.2

Simplifying
M = 23.2

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