A-9=18

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Solution for A-9=18 equation: 


Simplifying
A + -9 = 18

Reorder the terms:
-9 + A = 18

Solving
-9 + A = 18

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 = 18 + 9

Combine like terms: -9 + 9 = 0
0 + A = 18 + 9
A = 18 + 9

Combine like terms: 18 + 9 = 27
A = 27

Simplifying
A = 27

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