-12+a+8a=3a+8a

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Solution for -12+a+8a=3a+8a equation:


Simplifying
-12 + a + 8a = 3a + 8a

Combine like terms: a + 8a = 9a
-12 + 9a = 3a + 8a

Combine like terms: 3a + 8a = 11a
-12 + 9a = 11a

Solving
-12 + 9a = 11a

Solving for variable 'a'.

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

Add '-11a' to each side of the equation.
-12 + 9a + -11a = 11a + -11a

Combine like terms: 9a + -11a = -2a
-12 + -2a = 11a + -11a

Combine like terms: 11a + -11a = 0
-12 + -2a = 0

Add '12' to each side of the equation.
-12 + 12 + -2a = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -2a = 0 + 12
-2a = 0 + 12

Combine like terms: 0 + 12 = 12
-2a = 12

Divide each side by '-2'.
a = -6

Simplifying
a = -6

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