A+a+12=2a+7+a

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Solution for A+a+12=2a+7+a equation:


Simplifying
A + a + 12 = 2a + 7 + a

Reorder the terms:
12 + A + a = 2a + 7 + a

Reorder the terms:
12 + A + a = 7 + 2a + a

Combine like terms: 2a + a = 3a
12 + A + a = 7 + 3a

Solving
12 + A + a = 7 + 3a

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 + A + -12 + a = 7 + -12 + 3a

Reorder the terms:
12 + -12 + A + a = 7 + -12 + 3a

Combine like terms: 12 + -12 = 0
0 + A + a = 7 + -12 + 3a
A + a = 7 + -12 + 3a

Combine like terms: 7 + -12 = -5
A + a = -5 + 3a

Add '-1a' to each side of the equation.
A + a + -1a = -5 + 3a + -1a

Combine like terms: a + -1a = 0
A + 0 = -5 + 3a + -1a
A = -5 + 3a + -1a

Combine like terms: 3a + -1a = 2a
A = -5 + 2a

Simplifying
A = -5 + 2a

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