3-a=4a+12

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Solution for 3-a=4a+12 equation:


Simplifying
3 + -1a = 4a + 12

Reorder the terms:
3 + -1a = 12 + 4a

Solving
3 + -1a = 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 + -1a + -4a = 12 + 4a + -4a

Combine like terms: -1a + -4a = -5a
3 + -5a = 12 + 4a + -4a

Combine like terms: 4a + -4a = 0
3 + -5a = 12 + 0
3 + -5a = 12

Add '-3' to each side of the equation.
3 + -3 + -5a = 12 + -3

Combine like terms: 3 + -3 = 0
0 + -5a = 12 + -3
-5a = 12 + -3

Combine like terms: 12 + -3 = 9
-5a = 9

Divide each side by '-5'.
a = -1.8

Simplifying
a = -1.8

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