a-9-2(a-12)=0

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Solution for a-9-2(a-12)=0 equation:


Simplifying
a + -9 + -2(a + -12) = 0

Reorder the terms:
a + -9 + -2(-12 + a) = 0
a + -9 + (-12 * -2 + a * -2) = 0
a + -9 + (24 + -2a) = 0

Reorder the terms:
-9 + 24 + a + -2a = 0

Combine like terms: -9 + 24 = 15
15 + a + -2a = 0

Combine like terms: a + -2a = -1a
15 + -1a = 0

Solving
15 + -1a = 0

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + -15 + -1a = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -1a = 0 + -15
-1a = 0 + -15

Combine like terms: 0 + -15 = -15
-1a = -15

Divide each side by '-1'.
a = 15

Simplifying
a = 15

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