4-2a=m

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Solution for 4-2a=m equation: 


Simplifying
4 + -2a = m

Solving
4 + -2a = m

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + -2a = -4 + m

Combine like terms: 4 + -4 = 0
0 + -2a = -4 + m
-2a = -4 + m

Divide each side by '-2'.
a = 2 + -0.5m

Simplifying
a = 2 + -0.5m

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