-19.9-a=28.5

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Solution for -19.9-a=28.5 equation: 


Simplifying
-19.9 + -1a = 28.5

Solving
-19.9 + -1a = 28.5

Solving for variable 'a'.

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

Add '19.9' to each side of the equation.
-19.9 + 19.9 + -1a = 28.5 + 19.9

Combine like terms: -19.9 + 19.9 = 0.0
0.0 + -1a = 28.5 + 19.9
-1a = 28.5 + 19.9

Combine like terms: 28.5 + 19.9 = 48.4
-1a = 48.4

Divide each side by '-1'.
a = -48.4

Simplifying
a = -48.4

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