-4.2-23=x

Solution for -4.2-23=x equation:

Simplifying
-4.2 + -23 = x

Combine like terms: -4.2 + -23 = -27.2
-27.2 = x

Solving
-27.2 = 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.
-27.2 + -1x = x + -1x

Combine like terms: x + -1x = 0
-27.2 + -1x = 0

Add '27.2' to each side of the equation.
-27.2 + 27.2 + -1x = 0 + 27.2

Combine like terms: -27.2 + 27.2 = 0.0
0.0 + -1x = 0 + 27.2
-1x = 0 + 27.2

Combine like terms: 0 + 27.2 = 27.2
-1x = 27.2

Divide each side by '-1'.
x = -27.2

Simplifying
x = -27.2