(a+3)=12+4a

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Solution for (a+3)=12+4a equation:


Simplifying
(a + 3) = 12 + 4a

Reorder the terms:
(3 + a) = 12 + 4a

Remove parenthesis around (3 + a)
3 + a = 12 + 4a

Solving
3 + a = 12 + 4a

Solving for variable 'a'.

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

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

Combine like terms: a + -4a = -3a
3 + -3a = 12 + 4a + -4a

Combine like terms: 4a + -4a = 0
3 + -3a = 12 + 0
3 + -3a = 12

Add '-3' to each side of the equation.
3 + -3 + -3a = 12 + -3

Combine like terms: 3 + -3 = 0
0 + -3a = 12 + -3
-3a = 12 + -3

Combine like terms: 12 + -3 = 9
-3a = 9

Divide each side by '-3'.
a = -3

Simplifying
a = -3

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