2a-4a-20=8a+12

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Solution for 2a-4a-20=8a+12 equation:


Simplifying
2a + -4a + -20 = 8a + 12

Reorder the terms:
-20 + 2a + -4a = 8a + 12

Combine like terms: 2a + -4a = -2a
-20 + -2a = 8a + 12

Reorder the terms:
-20 + -2a = 12 + 8a

Solving
-20 + -2a = 12 + 8a

Solving for variable 'a'.

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

Add '-8a' to each side of the equation.
-20 + -2a + -8a = 12 + 8a + -8a

Combine like terms: -2a + -8a = -10a
-20 + -10a = 12 + 8a + -8a

Combine like terms: 8a + -8a = 0
-20 + -10a = 12 + 0
-20 + -10a = 12

Add '20' to each side of the equation.
-20 + 20 + -10a = 12 + 20

Combine like terms: -20 + 20 = 0
0 + -10a = 12 + 20
-10a = 12 + 20

Combine like terms: 12 + 20 = 32
-10a = 32

Divide each side by '-10'.
a = -3.2

Simplifying
a = -3.2

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