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

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


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

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

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

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

Combine like terms: 120 + 120 = 240
720 = 240 + 120 + 100 + 10 + x + x

Combine like terms: 240 + 120 = 360
720 = 360 + 100 + 10 + x + x

Combine like terms: 360 + 100 = 460
720 = 460 + 10 + x + x

Combine like terms: 460 + 10 = 470
720 = 470 + x + x

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

Solving
720 = 470 + 2x

Solving for variable 'x'.

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

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

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

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

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

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

Divide each side by '-2'.
x = 125

Simplifying
x = 125

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