42=4y+x

Solution for 42=4y+x equation:

Simplifying
42 = 4y + x

Reorder the terms:
42 = x + 4y

Solving
42 = x + 4y

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 = x + -1x + 4y

Combine like terms: x + -1x = 0
42 + -1x = 0 + 4y
42 + -1x = 4y

Add '-42' to each side of the equation.
42 + -42 + -1x = -42 + 4y

Combine like terms: 42 + -42 = 0
0 + -1x = -42 + 4y
-1x = -42 + 4y

Divide each side by '-1'.
x = 42 + -4y

Simplifying
x = 42 + -4y