19.4-13.9=x

Solution for 19.4-13.9=x equation:

Simplifying
19.4 + -13.9 = x

Combine like terms: 19.4 + -13.9 = 5.5
5.5 = x

Solving
5.5 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
5.5 + -1x = x + -1x

Combine like terms: x + -1x = 0
5.5 + -1x = 0

Add '-5.5' to each side of the equation.
5.5 + -5.5 + -1x = 0 + -5.5

Combine like terms: 5.5 + -5.5 = 0.0
0.0 + -1x = 0 + -5.5
-1x = 0 + -5.5

Combine like terms: 0 + -5.5 = -5.5
-1x = -5.5

Divide each side by '-1'.
x = 5.5

Simplifying
x = 5.5