2x+21=3+6x-6

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Solution for 2x+21=3+6x-6 equation:


Simplifying
2x + 21 = 3 + 6x + -6

Reorder the terms:
21 + 2x = 3 + 6x + -6

Reorder the terms:
21 + 2x = 3 + -6 + 6x

Combine like terms: 3 + -6 = -3
21 + 2x = -3 + 6x

Solving
21 + 2x = -3 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
21 + 2x + -6x = -3 + 6x + -6x

Combine like terms: 2x + -6x = -4x
21 + -4x = -3 + 6x + -6x

Combine like terms: 6x + -6x = 0
21 + -4x = -3 + 0
21 + -4x = -3

Add '-21' to each side of the equation.
21 + -21 + -4x = -3 + -21

Combine like terms: 21 + -21 = 0
0 + -4x = -3 + -21
-4x = -3 + -21

Combine like terms: -3 + -21 = -24
-4x = -24

Divide each side by '-4'.
x = 6

Simplifying
x = 6

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