42-19=x

Solution for 42-19=x equation:

Simplifying
42 + -19 = x

Combine like terms: 42 + -19 = 23
23 = x

Solving
23 = 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.
23 + -1x = x + -1x

Combine like terms: x + -1x = 0
23 + -1x = 0

Add '-23' to each side of the equation.
23 + -23 + -1x = 0 + -23

Combine like terms: 23 + -23 = 0
0 + -1x = 0 + -23
-1x = 0 + -23

Combine like terms: 0 + -23 = -23
-1x = -23

Divide each side by '-1'.
x = 23

Simplifying
x = 23