x-21x=x+84

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Solution for x-21x=x+84 equation:


Simplifying
x + -21x = x + 84

Combine like terms: x + -21x = -20x
-20x = x + 84

Reorder the terms:
-20x = 84 + x

Solving
-20x = 84 + 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.
-20x + -1x = 84 + x + -1x

Combine like terms: -20x + -1x = -21x
-21x = 84 + x + -1x

Combine like terms: x + -1x = 0
-21x = 84 + 0
-21x = 84

Divide each side by '-21'.
x = -4

Simplifying
x = -4

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