-20=4a+4+8a

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Solution for -20=4a+4+8a equation:


Simplifying
-20 = 4a + 4 + 8a

Reorder the terms:
-20 = 4 + 4a + 8a

Combine like terms: 4a + 8a = 12a
-20 = 4 + 12a

Solving
-20 = 4 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
-20 + -12a = 4 + 12a + -12a

Combine like terms: 12a + -12a = 0
-20 + -12a = 4 + 0
-20 + -12a = 4

Add '20' to each side of the equation.
-20 + 20 + -12a = 4 + 20

Combine like terms: -20 + 20 = 0
0 + -12a = 4 + 20
-12a = 4 + 20

Combine like terms: 4 + 20 = 24
-12a = 24

Divide each side by '-12'.
a = -2

Simplifying
a = -2

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