3-1=4a+12

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Solution for 3-1=4a+12 equation:


Simplifying
3 + -1 = 4a + 12

Combine like terms: 3 + -1 = 2
2 = 4a + 12

Reorder the terms:
2 = 12 + 4a

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

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

Add '-2' to each side of the equation.
2 + -2 + -4a = 12 + -2

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

Combine like terms: 12 + -2 = 10
-4a = 10

Divide each side by '-4'.
a = -2.5

Simplifying
a = -2.5

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