8x-3x-x=21

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Solution for 8x-3x-x=21 equation: 


Simplifying
8x + -3x + -1x = 21

Combine like terms: 8x + -3x = 5x
5x + -1x = 21

Combine like terms: 5x + -1x = 4x
4x = 21

Solving
4x = 21

Solving for variable 'x'.

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

Divide each side by '4'.
x = 5.25

Simplifying
x = 5.25

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