-2a+12+8a=7a-5a

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Solution for -2a+12+8a=7a-5a equation:


Simplifying
-2a + 12 + 8a = 7a + -5a

Reorder the terms:
12 + -2a + 8a = 7a + -5a

Combine like terms: -2a + 8a = 6a
12 + 6a = 7a + -5a

Combine like terms: 7a + -5a = 2a
12 + 6a = 2a

Solving
12 + 6a = 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
12 + 6a + -2a = 2a + -2a

Combine like terms: 6a + -2a = 4a
12 + 4a = 2a + -2a

Combine like terms: 2a + -2a = 0
12 + 4a = 0

Add '-12' to each side of the equation.
12 + -12 + 4a = 0 + -12

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

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

Divide each side by '4'.
a = -3

Simplifying
a = -3

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