12=36-4a*2

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Solution for 12=36-4a*2 equation:


Simplifying
12 = 36 + -4a * 2

Reorder the terms for easier multiplication:
12 = 36 + -4 * 2a

Multiply -4 * 2
12 = 36 + -8a

Solving
12 = 36 + -8a

Solving for variable 'a'.

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

Add '8a' to each side of the equation.
12 + 8a = 36 + -8a + 8a

Combine like terms: -8a + 8a = 0
12 + 8a = 36 + 0
12 + 8a = 36

Add '-12' to each side of the equation.
12 + -12 + 8a = 36 + -12

Combine like terms: 12 + -12 = 0
0 + 8a = 36 + -12
8a = 36 + -12

Combine like terms: 36 + -12 = 24
8a = 24

Divide each side by '8'.
a = 3

Simplifying
a = 3

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