-4a+8+2a=3a-9a

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Solution for -4a+8+2a=3a-9a equation:


Simplifying
-4a + 8 + 2a = 3a + -9a

Reorder the terms:
8 + -4a + 2a = 3a + -9a

Combine like terms: -4a + 2a = -2a
8 + -2a = 3a + -9a

Combine like terms: 3a + -9a = -6a
8 + -2a = -6a

Solving
8 + -2a = -6a

Solving for variable 'a'.

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

Add '6a' to each side of the equation.
8 + -2a + 6a = -6a + 6a

Combine like terms: -2a + 6a = 4a
8 + 4a = -6a + 6a

Combine like terms: -6a + 6a = 0
8 + 4a = 0

Add '-8' to each side of the equation.
8 + -8 + 4a = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 4a = 0 + -8
4a = 0 + -8

Combine like terms: 0 + -8 = -8
4a = -8

Divide each side by '4'.
a = -2

Simplifying
a = -2

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