x+20+2x-70+90+x+x+20+x=720

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Solution for x+20+2x-70+90+x+x+20+x=720 equation: 


Simplifying
x + 20 + 2x + -70 + 90 + x + x + 20 + x = 720

Reorder the terms:
20 + -70 + 90 + 20 + x + 2x + x + x + x = 720

Combine like terms: 20 + -70 = -50
-50 + 90 + 20 + x + 2x + x + x + x = 720

Combine like terms: -50 + 90 = 40
40 + 20 + x + 2x + x + x + x = 720

Combine like terms: 40 + 20 = 60
60 + x + 2x + x + x + x = 720

Combine like terms: x + 2x = 3x
60 + 3x + x + x + x = 720

Combine like terms: 3x + x = 4x
60 + 4x + x + x = 720

Combine like terms: 4x + x = 5x
60 + 5x + x = 720

Combine like terms: 5x + x = 6x
60 + 6x = 720

Solving
60 + 6x = 720

Solving for variable 'x'.

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

Add '-60' to each side of the equation.
60 + -60 + 6x = 720 + -60

Combine like terms: 60 + -60 = 0
0 + 6x = 720 + -60
6x = 720 + -60

Combine like terms: 720 + -60 = 660
6x = 660

Divide each side by '6'.
x = 110

Simplifying
x = 110

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