20+6a-12=5a+15

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Solution for 20+6a-12=5a+15 equation:


Simplifying
20 + 6a + -12 = 5a + 15

Reorder the terms:
20 + -12 + 6a = 5a + 15

Combine like terms: 20 + -12 = 8
8 + 6a = 5a + 15

Reorder the terms:
8 + 6a = 15 + 5a

Solving
8 + 6a = 15 + 5a

Solving for variable 'a'.

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

Add '-5a' to each side of the equation.
8 + 6a + -5a = 15 + 5a + -5a

Combine like terms: 6a + -5a = 1a
8 + 1a = 15 + 5a + -5a

Combine like terms: 5a + -5a = 0
8 + 1a = 15 + 0
8 + 1a = 15

Add '-8' to each side of the equation.
8 + -8 + 1a = 15 + -8

Combine like terms: 8 + -8 = 0
0 + 1a = 15 + -8
1a = 15 + -8

Combine like terms: 15 + -8 = 7
1a = 7

Divide each side by '1'.
a = 7

Simplifying
a = 7

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