4a-12=99

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Solution for 4a-12=99 equation: 


Simplifying
4a + -12 = 99

Reorder the terms:
-12 + 4a = 99

Solving
-12 + 4a = 99

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + 4a = 99 + 12

Combine like terms: -12 + 12 = 0
0 + 4a = 99 + 12
4a = 99 + 12

Combine like terms: 99 + 12 = 111
4a = 111

Divide each side by '4'.
a = 27.75

Simplifying
a = 27.75

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