80-x=8x-1

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Solution for 80-x=8x-1 equation:


Simplifying
80 + -1x = 8x + -1

Reorder the terms:
80 + -1x = -1 + 8x

Solving
80 + -1x = -1 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
80 + -1x + -8x = -1 + 8x + -8x

Combine like terms: -1x + -8x = -9x
80 + -9x = -1 + 8x + -8x

Combine like terms: 8x + -8x = 0
80 + -9x = -1 + 0
80 + -9x = -1

Add '-80' to each side of the equation.
80 + -80 + -9x = -1 + -80

Combine like terms: 80 + -80 = 0
0 + -9x = -1 + -80
-9x = -1 + -80

Combine like terms: -1 + -80 = -81
-9x = -81

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

Simplifying
x = 9

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