3.5-5=x

Solution for 3.5-5=x equation:

Simplifying
3.5 + -5 = x

Combine like terms: 3.5 + -5 = -1.5
-1.5 = x

Solving
-1.5 = 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.
-1.5 + -1x = x + -1x

Combine like terms: x + -1x = 0
-1.5 + -1x = 0

Add '1.5' to each side of the equation.
-1.5 + 1.5 + -1x = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -1x = 0 + 1.5
-1x = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-1x = 1.5

Divide each side by '-1'.
x = -1.5

Simplifying
x = -1.5