72-7+a=b

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Solution for 72-7+a=b equation: 


Simplifying
72 + -7 + a = b

Combine like terms: 72 + -7 = 65
65 + a = b

Solving
65 + a = b

Solving for variable 'a'.

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

Add '-65' to each side of the equation.
65 + -65 + a = -65 + b

Combine like terms: 65 + -65 = 0
0 + a = -65 + b
a = -65 + b

Simplifying
a = -65 + b

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