21x-100=x

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Solution for 21x-100=x equation:


Simplifying
21x + -100 = x

Reorder the terms:
-100 + 21x = x

Solving
-100 + 21x = 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.
-100 + 21x + -1x = x + -1x

Combine like terms: 21x + -1x = 20x
-100 + 20x = x + -1x

Combine like terms: x + -1x = 0
-100 + 20x = 0

Add '100' to each side of the equation.
-100 + 100 + 20x = 0 + 100

Combine like terms: -100 + 100 = 0
0 + 20x = 0 + 100
20x = 0 + 100

Combine like terms: 0 + 100 = 100
20x = 100

Divide each side by '20'.
x = 5

Simplifying
x = 5

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