21+x=y

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Solution for 21+x=y equation: 


Simplifying
21 + x = y

Solving
21 + x = y

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-21' to each side of the equation.
21 + -21 + x = -21 + y

Combine like terms: 21 + -21 = 0
0 + x = -21 + y
x = -21 + y

Simplifying
x = -21 + y

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