-7x+21=7x+21

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Solution for -7x+21=7x+21 equation:


Simplifying
-7x + 21 = 7x + 21

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

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

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

Combine like terms: 21 + -21 = 0
0 + -7x = 21 + -21 + 7x
-7x = 21 + -21 + 7x

Combine like terms: 21 + -21 = 0
-7x = 0 + 7x
-7x = 7x

Solving
-7x = 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.
-7x + -7x = 7x + -7x

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

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

Divide each side by '-14'.
x = 0

Simplifying
x = 0

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