8a-15a-6a=85-3a

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Solution for 8a-15a-6a=85-3a equation: 


Simplifying
8a + -15a + -6a = 85 + -3a

Combine like terms: 8a + -15a = -7a
-7a + -6a = 85 + -3a

Combine like terms: -7a + -6a = -13a
-13a = 85 + -3a

Solving
-13a = 85 + -3a

Solving for variable 'a'.

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

Add '3a' to each side of the equation.
-13a + 3a = 85 + -3a + 3a

Combine like terms: -13a + 3a = -10a
-10a = 85 + -3a + 3a

Combine like terms: -3a + 3a = 0
-10a = 85 + 0
-10a = 85

Divide each side by '-10'.
a = -8.5

Simplifying
a = -8.5

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