42=x+9

Solution for 42=x+9 equation:

Simplifying
42 = x + 9

Reorder the terms:
42 = 9 + x

Solving
42 = 9 + 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.
42 + -1x = 9 + x + -1x

Combine like terms: x + -1x = 0
42 + -1x = 9 + 0
42 + -1x = 9

Add '-42' to each side of the equation.
42 + -42 + -1x = 9 + -42

Combine like terms: 42 + -42 = 0
0 + -1x = 9 + -42
-1x = 9 + -42

Combine like terms: 9 + -42 = -33
-1x = -33

Divide each side by '-1'.
x = 33

Simplifying
x = 33