7x+13=90,x

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Solution for 7x+13=90,x equation: 



7x+13=90.x

We move all terms to the left:

7x+13-(90.x)=0

We add all the numbers together, and all the variables

7x-(+90.x)+13=0

We get rid of parentheses

7x-90.x+13=0

We add all the numbers together, and all the variables

-83x+13=0

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

-83x=-13

x=-13/-83

x=13/83

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