2-1a=4a+12

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Solution for 2-1a=4a+12 equation: 


Simplifying
2 + -1a = 4a + 12

Reorder the terms:
2 + -1a = 12 + 4a

Solving
2 + -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.
2 + -1a + -4a = 12 + 4a + -4a

Combine like terms: -1a + -4a = -5a
2 + -5a = 12 + 4a + -4a

Combine like terms: 4a + -4a = 0
2 + -5a = 12 + 0
2 + -5a = 12

Add '-2' to each side of the equation.
2 + -2 + -5a = 12 + -2

Combine like terms: 2 + -2 = 0
0 + -5a = 12 + -2
-5a = 12 + -2

Combine like terms: 12 + -2 = 10
-5a = 10

Divide each side by '-5'.
a = -2

Simplifying
a = -2

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