12+4a-8=16

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Solution for 12+4a-8=16 equation: 


Simplifying
12 + 4a + -8 = 16

Reorder the terms:
12 + -8 + 4a = 16

Combine like terms: 12 + -8 = 4
4 + 4a = 16

Solving
4 + 4a = 16

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 + 4a = 16 + -4

Combine like terms: 4 + -4 = 0
0 + 4a = 16 + -4
4a = 16 + -4

Combine like terms: 16 + -4 = 12
4a = 12

Divide each side by '4'.
a = 3

Simplifying
a = 3

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