A-3.5=9

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Solution for A-3.5=9 equation: 


Simplifying
A + -3.5 = 9

Reorder the terms:
-3.5 + A = 9

Solving
-3.5 + A = 9

Solving for variable 'A'.

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

Add '3.5' to each side of the equation.
-3.5 + 3.5 + A = 9 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + A = 9 + 3.5
A = 9 + 3.5

Combine like terms: 9 + 3.5 = 12.5
A = 12.5

Simplifying
A = 12.5

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