8a-9=9a-6

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Solution for 8a-9=9a-6 equation:


Simplifying
8a + -9 = 9a + -6

Reorder the terms:
-9 + 8a = 9a + -6

Reorder the terms:
-9 + 8a = -6 + 9a

Solving
-9 + 8a = -6 + 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
-9 + 8a + -9a = -6 + 9a + -9a

Combine like terms: 8a + -9a = -1a
-9 + -1a = -6 + 9a + -9a

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

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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