720=x+9+145+156+120+x

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Solution for 720=x+9+145+156+120+x equation: 



720=x+9+145+156+120+x

We move all terms to the left:

720-(x+9+145+156+120+x)=0

We add all the numbers together, and all the variables

-(2x+430)+720=0

We get rid of parentheses

-2x-430+720=0

We add all the numbers together, and all the variables

-2x+290=0

We move all terms containing x to the left, all other terms to the right

-2x=-290

x=-290/-2

x=+145

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