8a-a-2=12

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Solution for 8a-a-2=12 equation: 


Simplifying
8a + -1a + -2 = 12

Reorder the terms:
-2 + 8a + -1a = 12

Combine like terms: 8a + -1a = 7a
-2 + 7a = 12

Solving
-2 + 7a = 12

Solving for variable 'a'.

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

Add '2' to each side of the equation.
-2 + 2 + 7a = 12 + 2

Combine like terms: -2 + 2 = 0
0 + 7a = 12 + 2
7a = 12 + 2

Combine like terms: 12 + 2 = 14
7a = 14

Divide each side by '7'.
a = 2

Simplifying
a = 2

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