[12-4a]=24

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Solution for [12-4a]=24 equation: 


Simplifying
[12 + -4a] = 24

Remove brackets around [12 + -4a]
12 + -4a = 24

Solving
12 + -4a = 24

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + -4a = 24 + -12

Combine like terms: 12 + -12 = 0
0 + -4a = 24 + -12
-4a = 24 + -12

Combine like terms: 24 + -12 = 12
-4a = 12

Divide each side by '-4'.
a = -3

Simplifying
a = -3

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