81-x=91-2x

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Solution for 81-x=91-2x equation:


Simplifying
81 + -1x = 91 + -2x

Solving
81 + -1x = 91 + -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.
81 + -1x + 2x = 91 + -2x + 2x

Combine like terms: -1x + 2x = 1x
81 + 1x = 91 + -2x + 2x

Combine like terms: -2x + 2x = 0
81 + 1x = 91 + 0
81 + 1x = 91

Add '-81' to each side of the equation.
81 + -81 + 1x = 91 + -81

Combine like terms: 81 + -81 = 0
0 + 1x = 91 + -81
1x = 91 + -81

Combine like terms: 91 + -81 = 10
1x = 10

Divide each side by '1'.
x = 10

Simplifying
x = 10

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