12a-17=9-a

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Solution for 12a-17=9-a equation:


Simplifying
12a + -17 = 9 + -1a

Reorder the terms:
-17 + 12a = 9 + -1a

Solving
-17 + 12a = 9 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
-17 + 12a + a = 9 + -1a + a

Combine like terms: 12a + a = 13a
-17 + 13a = 9 + -1a + a

Combine like terms: -1a + a = 0
-17 + 13a = 9 + 0
-17 + 13a = 9

Add '17' to each side of the equation.
-17 + 17 + 13a = 9 + 17

Combine like terms: -17 + 17 = 0
0 + 13a = 9 + 17
13a = 9 + 17

Combine like terms: 9 + 17 = 26
13a = 26

Divide each side by '13'.
a = 2

Simplifying
a = 2

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