12=2a-4

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Solution for 12=2a-4 equation:


Simplifying
12 = 2a + -4

Reorder the terms:
12 = -4 + 2a

Solving
12 = -4 + 2a

Solving for variable 'a'.

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

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

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

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

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

Combine like terms: -4 + -12 = -16
-2a = -16

Divide each side by '-2'.
a = 8

Simplifying
a = 8

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