M-1=3

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Solution for M-1=3 equation: 


Simplifying
M + -1 = 3

Reorder the terms:
-1 + M = 3

Solving
-1 + M = 3

Solving for variable 'M'.

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

Add '1' to each side of the equation.
-1 + 1 + M = 3 + 1

Combine like terms: -1 + 1 = 0
0 + M = 3 + 1
M = 3 + 1

Combine like terms: 3 + 1 = 4
M = 4

Simplifying
M = 4

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