-12=-4[a-2]

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Solution for -12=-4[a-2] equation:


Simplifying
-12 = -4[a + -2]

Reorder the terms:
-12 = -4[-2 + a]
-12 = [-2 * -4 + a * -4]
-12 = [8 + -4a]

Solving
-12 = 8 + -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.
-12 + 4a = 8 + -4a + 4a

Combine like terms: -4a + 4a = 0
-12 + 4a = 8 + 0
-12 + 4a = 8

Add '12' to each side of the equation.
-12 + 12 + 4a = 8 + 12

Combine like terms: -12 + 12 = 0
0 + 4a = 8 + 12
4a = 8 + 12

Combine like terms: 8 + 12 = 20
4a = 20

Divide each side by '4'.
a = 5

Simplifying
a = 5

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