A-15=4a-3

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Solution for A-15=4a-3 equation: 


Simplifying
A + -15 = 4a + -3

Reorder the terms:
-15 + A = 4a + -3

Reorder the terms:
-15 + A = -3 + 4a

Solving
-15 + A = -3 + 4a

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 + A = -3 + 15 + 4a

Combine like terms: -15 + 15 = 0
0 + A = -3 + 15 + 4a
A = -3 + 15 + 4a

Combine like terms: -3 + 15 = 12
A = 12 + 4a

Simplifying
A = 12 + 4a

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