80-x=90+2x

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Solution for 80-x=90+2x equation:


Simplifying
80 + -1x = 90 + 2x

Solving
80 + -1x = 90 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
80 + -1x + -2x = 90 + 2x + -2x

Combine like terms: -1x + -2x = -3x
80 + -3x = 90 + 2x + -2x

Combine like terms: 2x + -2x = 0
80 + -3x = 90 + 0
80 + -3x = 90

Add '-80' to each side of the equation.
80 + -80 + -3x = 90 + -80

Combine like terms: 80 + -80 = 0
0 + -3x = 90 + -80
-3x = 90 + -80

Combine like terms: 90 + -80 = 10
-3x = 10

Divide each side by '-3'.
x = -3.333333333

Simplifying
x = -3.333333333

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