a-11=9

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Solution for a-11=9 equation: 


Simplifying
a + -11 = 9

Reorder the terms:
-11 + a = 9

Solving
-11 + a = 9

Solving for variable 'a'.

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

Add '11' to each side of the equation.
-11 + 11 + a = 9 + 11

Combine like terms: -11 + 11 = 0
0 + a = 9 + 11
a = 9 + 11

Combine like terms: 9 + 11 = 20
a = 20

Simplifying
a = 20

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