9=a+9

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Solution for 9=a+9 equation:


Simplifying
9 = a + 9

Reorder the terms:
9 = 9 + a

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

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

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

Solving
0 = a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
0 + -1a = a + -1a
Remove the zero:
-1a = a + -1a

Combine like terms: a + -1a = 0
-1a = 0

Divide each side by '-1'.
a = 0

Simplifying
a = 0

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