2a-12+5a=3a-20

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Solution for 2a-12+5a=3a-20 equation:


Simplifying
2a + -12 + 5a = 3a + -20

Reorder the terms:
-12 + 2a + 5a = 3a + -20

Combine like terms: 2a + 5a = 7a
-12 + 7a = 3a + -20

Reorder the terms:
-12 + 7a = -20 + 3a

Solving
-12 + 7a = -20 + 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.
-12 + 7a + -3a = -20 + 3a + -3a

Combine like terms: 7a + -3a = 4a
-12 + 4a = -20 + 3a + -3a

Combine like terms: 3a + -3a = 0
-12 + 4a = -20 + 0
-12 + 4a = -20

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

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

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

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

Simplifying
a = -2

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