120+100+x+120+x+10+120=720

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Solution for 120+100+x+120+x+10+120=720 equation: 


Simplifying
120 + 100 + x + 120 + x + 10 + 120 = 720

Reorder the terms:
120 + 100 + 120 + 10 + 120 + x + x = 720

Combine like terms: 120 + 100 = 220
220 + 120 + 10 + 120 + x + x = 720

Combine like terms: 220 + 120 = 340
340 + 10 + 120 + x + x = 720

Combine like terms: 340 + 10 = 350
350 + 120 + x + x = 720

Combine like terms: 350 + 120 = 470
470 + x + x = 720

Combine like terms: x + x = 2x
470 + 2x = 720

Solving
470 + 2x = 720

Solving for variable 'x'.

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

Add '-470' to each side of the equation.
470 + -470 + 2x = 720 + -470

Combine like terms: 470 + -470 = 0
0 + 2x = 720 + -470
2x = 720 + -470

Combine like terms: 720 + -470 = 250
2x = 250

Divide each side by '2'.
x = 125

Simplifying
x = 125

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