20(60-x)-3x=280

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Solution for 20(60-x)-3x=280 equation:


Simplifying
20(60 + -1x) + -3x = 280
(60 * 20 + -1x * 20) + -3x = 280
(1200 + -20x) + -3x = 280

Combine like terms: -20x + -3x = -23x
1200 + -23x = 280

Solving
1200 + -23x = 280

Solving for variable 'x'.

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

Add '-1200' to each side of the equation.
1200 + -1200 + -23x = 280 + -1200

Combine like terms: 1200 + -1200 = 0
0 + -23x = 280 + -1200
-23x = 280 + -1200

Combine like terms: 280 + -1200 = -920
-23x = -920

Divide each side by '-23'.
x = 40

Simplifying
x = 40

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