4x-21=-2x+21

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Solution for 4x-21=-2x+21 equation:


Simplifying
4x + -21 = -2x + 21

Reorder the terms:
-21 + 4x = -2x + 21

Reorder the terms:
-21 + 4x = 21 + -2x

Solving
-21 + 4x = 21 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-21 + 4x + 2x = 21 + -2x + 2x

Combine like terms: 4x + 2x = 6x
-21 + 6x = 21 + -2x + 2x

Combine like terms: -2x + 2x = 0
-21 + 6x = 21 + 0
-21 + 6x = 21

Add '21' to each side of the equation.
-21 + 21 + 6x = 21 + 21

Combine like terms: -21 + 21 = 0
0 + 6x = 21 + 21
6x = 21 + 21

Combine like terms: 21 + 21 = 42
6x = 42

Divide each side by '6'.
x = 7

Simplifying
x = 7

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