a-3.5=19.5

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Solution for a-3.5=19.5 equation: 


Simplifying
a + -3.5 = 19.5

Reorder the terms:
-3.5 + a = 19.5

Solving
-3.5 + a = 19.5

Solving for variable 'a'.

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

Add '3.5' to each side of the equation.
-3.5 + 3.5 + a = 19.5 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + a = 19.5 + 3.5
a = 19.5 + 3.5

Combine like terms: 19.5 + 3.5 = 23
a = 23

Simplifying
a = 23

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