6x+2x-3=9x+2x-21

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Solution for 6x+2x-3=9x+2x-21 equation:


Simplifying
6x + 2x + -3 = 9x + 2x + -21

Reorder the terms:
-3 + 6x + 2x = 9x + 2x + -21

Combine like terms: 6x + 2x = 8x
-3 + 8x = 9x + 2x + -21

Reorder the terms:
-3 + 8x = -21 + 9x + 2x

Combine like terms: 9x + 2x = 11x
-3 + 8x = -21 + 11x

Solving
-3 + 8x = -21 + 11x

Solving for variable 'x'.

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

Add '-11x' to each side of the equation.
-3 + 8x + -11x = -21 + 11x + -11x

Combine like terms: 8x + -11x = -3x
-3 + -3x = -21 + 11x + -11x

Combine like terms: 11x + -11x = 0
-3 + -3x = -21 + 0
-3 + -3x = -21

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

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

Combine like terms: -21 + 3 = -18
-3x = -18

Divide each side by '-3'.
x = 6

Simplifying
x = 6

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