a+9-2a=6

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Solution for a+9-2a=6 equation: 


Simplifying
a + 9 + -2a = 6

Reorder the terms:
9 + a + -2a = 6

Combine like terms: a + -2a = -1a
9 + -1a = 6

Solving
9 + -1a = 6

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 + -1a = 6 + -9

Combine like terms: 9 + -9 = 0
0 + -1a = 6 + -9
-1a = 6 + -9

Combine like terms: 6 + -9 = -3
-1a = -3

Divide each side by '-1'.
a = 3

Simplifying
a = 3

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