1=x-21

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Solution for 1=x-21 equation:


Simplifying
1 = x + -21

Reorder the terms:
1 = -21 + x

Solving
1 = -21 + 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.
1 + -1x = -21 + x + -1x

Combine like terms: x + -1x = 0
1 + -1x = -21 + 0
1 + -1x = -21

Add '-1' to each side of the equation.
1 + -1 + -1x = -21 + -1

Combine like terms: 1 + -1 = 0
0 + -1x = -21 + -1
-1x = -21 + -1

Combine like terms: -21 + -1 = -22
-1x = -22

Divide each side by '-1'.
x = 22

Simplifying
x = 22

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