-3a+20+9a=2a-6a

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Solution for -3a+20+9a=2a-6a equation:


Simplifying
-3a + 20 + 9a = 2a + -6a

Reorder the terms:
20 + -3a + 9a = 2a + -6a

Combine like terms: -3a + 9a = 6a
20 + 6a = 2a + -6a

Combine like terms: 2a + -6a = -4a
20 + 6a = -4a

Solving
20 + 6a = -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
20 + 6a + 4a = -4a + 4a

Combine like terms: 6a + 4a = 10a
20 + 10a = -4a + 4a

Combine like terms: -4a + 4a = 0
20 + 10a = 0

Add '-20' to each side of the equation.
20 + -20 + 10a = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 10a = 0 + -20
10a = 0 + -20

Combine like terms: 0 + -20 = -20
10a = -20

Divide each side by '10'.
a = -2

Simplifying
a = -2

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