X2-8x+7=x(x+1)

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Solution for X2-8x+7=x(x+1) equation: 



X2-8X+7=X(X+1)

We move all terms to the left:

X2-8X+7-(X(X+1))=0

We add all the numbers together, and all the variables

X^2-8X-(X(X+1))+7=0



We calculate terms in parentheses: -(X(X+1)), so:

X(X+1)

We multiply parentheses

X^2+X

Back to the equation:

-(X^2+X)



We get rid of parentheses

X^2-X^2-8X-X+7=0

We add all the numbers together, and all the variables

-9X+7=0

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

-9X=-7

X=-7/-9

X=7/9

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