(x-1)+91=180

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Solution for (x-1)+91=180 equation:


Simplifying
(x + -1) + 91 = 180

Reorder the terms:
(-1 + x) + 91 = 180

Remove parenthesis around (-1 + x)
-1 + x + 91 = 180

Reorder the terms:
-1 + 91 + x = 180

Combine like terms: -1 + 91 = 90
90 + x = 180

Solving
90 + x = 180

Solving for variable 'x'.

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

Add '-90' to each side of the equation.
90 + -90 + x = 180 + -90

Combine like terms: 90 + -90 = 0
0 + x = 180 + -90
x = 180 + -90

Combine like terms: 180 + -90 = 90
x = 90

Simplifying
x = 90

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