7.9-a=12

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Solution for 7.9-a=12 equation: 


Simplifying
7.9 + -1a = 12

Solving
7.9 + -1a = 12

Solving for variable 'a'.

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

Add '-7.9' to each side of the equation.
7.9 + -7.9 + -1a = 12 + -7.9

Combine like terms: 7.9 + -7.9 = 0.0
0.0 + -1a = 12 + -7.9
-1a = 12 + -7.9

Combine like terms: 12 + -7.9 = 4.1
-1a = 4.1

Divide each side by '-1'.
a = -4.1

Simplifying
a = -4.1

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