-6x-21=-9x-x

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Solution for -6x-21=-9x-x equation:


Simplifying
-6x + -21 = -9x + -1x

Reorder the terms:
-21 + -6x = -9x + -1x

Combine like terms: -9x + -1x = -10x
-21 + -6x = -10x

Solving
-21 + -6x = -10x

Solving for variable 'x'.

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

Add '10x' to each side of the equation.
-21 + -6x + 10x = -10x + 10x

Combine like terms: -6x + 10x = 4x
-21 + 4x = -10x + 10x

Combine like terms: -10x + 10x = 0
-21 + 4x = 0

Add '21' to each side of the equation.
-21 + 21 + 4x = 0 + 21

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

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

Divide each side by '4'.
x = 5.25

Simplifying
x = 5.25

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