x-21=15x

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Solution for x-21=15x equation:


Simplifying
x + -21 = 15x

Reorder the terms:
-21 + x = 15x

Solving
-21 + x = 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
-21 + x + -15x = 15x + -15x

Combine like terms: x + -15x = -14x
-21 + -14x = 15x + -15x

Combine like terms: 15x + -15x = 0
-21 + -14x = 0

Add '21' to each side of the equation.
-21 + 21 + -14x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -14x = 0 + 21
-14x = 0 + 21

Combine like terms: 0 + 21 = 21
-14x = 21

Divide each side by '-14'.
x = -1.5

Simplifying
x = -1.5

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