(X+50)+(x+20)=9x

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Solution for (X+50)+(x+20)=9x equation: 



(X+50)+(X+20)=9X

We move all terms to the left:

(X+50)+(X+20)-(9X)=0

We add all the numbers together, and all the variables

-9X+(X+50)+(X+20)=0

We get rid of parentheses

-9X+X+X+50+20=0

We add all the numbers together, and all the variables

-7X+70=0

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

-7X=-70

X=-70/-7

X=+10

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