120+100+120+120+120+(x+10)+x=720

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


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

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

Remove parenthesis around (10 + x)
120 + 100 + 120 + 120 + 120 + 10 + x + x = 720

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

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

Combine like terms: 340 + 120 = 460
460 + 120 + 10 + x + x = 720

Combine like terms: 460 + 120 = 580
580 + 10 + x + x = 720

Combine like terms: 580 + 10 = 590
590 + x + x = 720

Combine like terms: x + x = 2x
590 + 2x = 720

Solving
590 + 2x = 720

Solving for variable 'x'.

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

Add '-590' to each side of the equation.
590 + -590 + 2x = 720 + -590

Combine like terms: 590 + -590 = 0
0 + 2x = 720 + -590
2x = 720 + -590

Combine like terms: 720 + -590 = 130
2x = 130

Divide each side by '2'.
x = 65

Simplifying
x = 65

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