a-7.9=12

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Solution for a-7.9=12 equation: 


Simplifying
a + -7.9 = 12

Reorder the terms:
-7.9 + a = 12

Solving
-7.9 + a = 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 + a = 12 + 7.9

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

Combine like terms: 12 + 7.9 = 19.9
a = 19.9

Simplifying
a = 19.9

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