180-(2x-21)=x

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Solution for 180-(2x-21)=x equation:


Simplifying
180 + -1(2x + -21) = x

Reorder the terms:
180 + -1(-21 + 2x) = x
180 + (-21 * -1 + 2x * -1) = x
180 + (21 + -2x) = x

Combine like terms: 180 + 21 = 201
201 + -2x = x

Solving
201 + -2x = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
201 + -2x + -1x = x + -1x

Combine like terms: -2x + -1x = -3x
201 + -3x = x + -1x

Combine like terms: x + -1x = 0
201 + -3x = 0

Add '-201' to each side of the equation.
201 + -201 + -3x = 0 + -201

Combine like terms: 201 + -201 = 0
0 + -3x = 0 + -201
-3x = 0 + -201

Combine like terms: 0 + -201 = -201
-3x = -201

Divide each side by '-3'.
x = 67

Simplifying
x = 67

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