-42=8a-2a+12

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Solution for -42=8a-2a+12 equation:


Simplifying
-42 = 8a + -2a + 12

Reorder the terms:
-42 = 12 + 8a + -2a

Combine like terms: 8a + -2a = 6a
-42 = 12 + 6a

Solving
-42 = 12 + 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
-42 + -6a = 12 + 6a + -6a

Combine like terms: 6a + -6a = 0
-42 + -6a = 12 + 0
-42 + -6a = 12

Add '42' to each side of the equation.
-42 + 42 + -6a = 12 + 42

Combine like terms: -42 + 42 = 0
0 + -6a = 12 + 42
-6a = 12 + 42

Combine like terms: 12 + 42 = 54
-6a = 54

Divide each side by '-6'.
a = -9

Simplifying
a = -9

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