(80-x)=3x

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Solution for (80-x)=3x equation:


Simplifying
(80 + -1x) = 3x

Remove parenthesis around (80 + -1x)
80 + -1x = 3x

Solving
80 + -1x = 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
80 + -1x + -3x = 3x + -3x

Combine like terms: -1x + -3x = -4x
80 + -4x = 3x + -3x

Combine like terms: 3x + -3x = 0
80 + -4x = 0

Add '-80' to each side of the equation.
80 + -80 + -4x = 0 + -80

Combine like terms: 80 + -80 = 0
0 + -4x = 0 + -80
-4x = 0 + -80

Combine like terms: 0 + -80 = -80
-4x = -80

Divide each side by '-4'.
x = 20

Simplifying
x = 20

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