9a-9=81

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Solution for 9a-9=81 equation:


Simplifying
9a + -9 = 81

Reorder the terms:
-9 + 9a = 81

Solving
-9 + 9a = 81

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 + 9a = 81 + 9

Combine like terms: -9 + 9 = 0
0 + 9a = 81 + 9
9a = 81 + 9

Combine like terms: 81 + 9 = 90
9a = 90

Divide each side by '9'.
a = 10

Simplifying
a = 10

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