-9a+15a+-8a+-12a+8a=18

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Solution for -9a+15a+-8a+-12a+8a=18 equation: 


Simplifying
-9a + 15a + -8a + -12a + 8a = 18

Combine like terms: -9a + 15a = 6a
6a + -8a + -12a + 8a = 18

Combine like terms: 6a + -8a = -2a
-2a + -12a + 8a = 18

Combine like terms: -2a + -12a = -14a
-14a + 8a = 18

Combine like terms: -14a + 8a = -6a
-6a = 18

Solving
-6a = 18

Solving for variable 'a'.

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

Divide each side by '-6'.
a = -3

Simplifying
a = -3

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