720=x*9

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Solution for 720=x*9 equation: 



720=x*9

We move all terms to the left:

720-(x*9)=0

We add all the numbers together, and all the variables

-(+x*9)+720=0

We get rid of parentheses

-x*9+720=0

Wy multiply elements

-9x+720=0

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

-9x=-720

x=-720/-9

x=+80

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