15-a=2(x+3)

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Solution for 15-a=2(x+3) equation:


Simplifying
15 + -1a = 2(x + 3)

Reorder the terms:
15 + -1a = 2(3 + x)
15 + -1a = (3 * 2 + x * 2)
15 + -1a = (6 + 2x)

Solving
15 + -1a = 6 + 2x

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 = 6 + -15 + 2x

Combine like terms: 15 + -15 = 0
0 + -1a = 6 + -15 + 2x
-1a = 6 + -15 + 2x

Combine like terms: 6 + -15 = -9
-1a = -9 + 2x

Divide each side by '-1'.
a = 9 + -2x

Simplifying
a = 9 + -2x

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