a(7-3)=12+b

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Solution for a(7-3)=12+b equation: 


Simplifying
a(7 + -3) = 12 + b

Combine like terms: 7 + -3 = 4
a(4) = 12 + b

Reorder the terms for easier multiplication:
4a = 12 + b

Solving
4a = 12 + b

Solving for variable 'a'.

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

Divide each side by '4'.
a = 3 + 0.25b

Simplifying
a = 3 + 0.25b

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