-3.5+17.3=a

Solution for -3.5+17.3=a equation:

Simplifying
-3.5 + 17.3 = a

Combine like terms: -3.5 + 17.3 = 13.8
13.8 = a

Solving
13.8 = a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
13.8 + -1a = a + -1a

Combine like terms: a + -1a = 0
13.8 + -1a = 0

Add '-13.8' to each side of the equation.
13.8 + -13.8 + -1a = 0 + -13.8

Combine like terms: 13.8 + -13.8 = 0.0
0.0 + -1a = 0 + -13.8
-1a = 0 + -13.8

Combine like terms: 0 + -13.8 = -13.8
-1a = -13.8

Divide each side by '-1'.
a = 13.8

Simplifying
a = 13.8