3a-7a=12a-2

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Solution for 3a-7a=12a-2 equation:


Simplifying
3a + -7a = 12a + -2

Combine like terms: 3a + -7a = -4a
-4a = 12a + -2

Reorder the terms:
-4a = -2 + 12a

Solving
-4a = -2 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
-4a + -12a = -2 + 12a + -12a

Combine like terms: -4a + -12a = -16a
-16a = -2 + 12a + -12a

Combine like terms: 12a + -12a = 0
-16a = -2 + 0
-16a = -2

Divide each side by '-16'.
a = 0.125

Simplifying
a = 0.125

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