6-x-8x=-21

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Solution for 6-x-8x=-21 equation:


Simplifying
6 + -1x + -8x = -21

Combine like terms: -1x + -8x = -9x
6 + -9x = -21

Solving
6 + -9x = -21

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + -9x = -21 + -6

Combine like terms: 6 + -6 = 0
0 + -9x = -21 + -6
-9x = -21 + -6

Combine like terms: -21 + -6 = -27
-9x = -27

Divide each side by '-9'.
x = 3

Simplifying
x = 3

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