20a-78=-2

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Solution for 20a-78=-2 equation: 


Simplifying
20a + -78 = -2

Reorder the terms:
-78 + 20a = -2

Solving
-78 + 20a = -2

Solving for variable 'a'.

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

Add '78' to each side of the equation.
-78 + 78 + 20a = -2 + 78

Combine like terms: -78 + 78 = 0
0 + 20a = -2 + 78
20a = -2 + 78

Combine like terms: -2 + 78 = 76
20a = 76

Divide each side by '20'.
a = 3.8

Simplifying
a = 3.8

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