A+9=5a-12

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Solution for A+9=5a-12 equation: 


Simplifying
A + 9 = 5a + -12

Reorder the terms:
9 + A = 5a + -12

Reorder the terms:
9 + A = -12 + 5a

Solving
9 + A = -12 + 5a

Solving for variable 'A'.

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

Add '-9' to each side of the equation.
9 + -9 + A = -12 + -9 + 5a

Combine like terms: 9 + -9 = 0
0 + A = -12 + -9 + 5a
A = -12 + -9 + 5a

Combine like terms: -12 + -9 = -21
A = -21 + 5a

Simplifying
A = -21 + 5a

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