21x-7=7x

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Solution for 21x-7=7x equation:


Simplifying
21x + -7 = 7x

Reorder the terms:
-7 + 21x = 7x

Solving
-7 + 21x = 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
-7 + 21x + -7x = 7x + -7x

Combine like terms: 21x + -7x = 14x
-7 + 14x = 7x + -7x

Combine like terms: 7x + -7x = 0
-7 + 14x = 0

Add '7' to each side of the equation.
-7 + 7 + 14x = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 14x = 0 + 7
14x = 0 + 7

Combine like terms: 0 + 7 = 7
14x = 7

Divide each side by '14'.
x = 0.5

Simplifying
x = 0.5

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