7-12a=13

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Solution for 7-12a=13 equation: 


Simplifying
7 + -12a = 13

Solving
7 + -12a = 13

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + -12a = 13 + -7

Combine like terms: 7 + -7 = 0
0 + -12a = 13 + -7
-12a = 13 + -7

Combine like terms: 13 + -7 = 6
-12a = 6

Divide each side by '-12'.
a = -0.5

Simplifying
a = -0.5

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