3=x+z

Solution for 3=x+z equation:

Simplifying
3 = x + z

Solving
3 = x + z

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.
3 + -1x = x + -1x + z

Combine like terms: x + -1x = 0
3 + -1x = 0 + z
3 + -1x = z

Add '-3' to each side of the equation.
3 + -3 + -1x = -3 + z

Combine like terms: 3 + -3 = 0
0 + -1x = -3 + z
-1x = -3 + z

Divide each side by '-1'.
x = 3 + -1z

Simplifying
x = 3 + -1z