12=24-a

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Solution for 12=24-a equation:


Simplifying
12 = 24 + -1a

Solving
12 = 24 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
12 + a = 24 + -1a + a

Combine like terms: -1a + a = 0
12 + a = 24 + 0
12 + a = 24

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

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

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

Simplifying
a = 12

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