13x+(20-x)=500

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Solution for 13x+(20-x)=500 equation:


Simplifying
13x + (20 + -1x) = 500

Remove parenthesis around (20 + -1x)
13x + 20 + -1x = 500

Reorder the terms:
20 + 13x + -1x = 500

Combine like terms: 13x + -1x = 12x
20 + 12x = 500

Solving
20 + 12x = 500

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + 12x = 500 + -20

Combine like terms: 20 + -20 = 0
0 + 12x = 500 + -20
12x = 500 + -20

Combine like terms: 500 + -20 = 480
12x = 480

Divide each side by '12'.
x = 40

Simplifying
x = 40

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