X+x+100+2(X+100)=580

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Solution for X+x+100+2(X+100)=580 equation: 


Simplifying
X + x + 100 + 2(X + 100) = 580

Reorder the terms:
X + x + 100 + 2(100 + X) = 580
X + x + 100 + (100 * 2 + X * 2) = 580
X + x + 100 + (200 + 2X) = 580

Reorder the terms:
100 + 200 + X + 2X + x = 580

Combine like terms: 100 + 200 = 300
300 + X + 2X + x = 580

Combine like terms: X + 2X = 3X
300 + 3X + x = 580

Solving
300 + 3X + x = 580

Solving for variable 'X'.

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

Add '-300' to each side of the equation.
300 + 3X + -300 + x = 580 + -300

Reorder the terms:
300 + -300 + 3X + x = 580 + -300

Combine like terms: 300 + -300 = 0
0 + 3X + x = 580 + -300
3X + x = 580 + -300

Combine like terms: 580 + -300 = 280
3X + x = 280

Add '-1x' to each side of the equation.
3X + x + -1x = 280 + -1x

Combine like terms: x + -1x = 0
3X + 0 = 280 + -1x
3X = 280 + -1x

Divide each side by '3'.
X = 93.33333333 + -0.3333333333x

Simplifying
X = 93.33333333 + -0.3333333333x

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