x(x-7)+15=x(x+8)

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Solution for x(x-7)+15=x(x+8) equation: 



x(x-7)+15=x(x+8)

We move all terms to the left:

x(x-7)+15-(x(x+8))=0

We multiply parentheses

x^2-7x-(x(x+8))+15=0



We calculate terms in parentheses: -(x(x+8)), so:

x(x+8)

We multiply parentheses

x^2+8x

Back to the equation:

-(x^2+8x)



We get rid of parentheses

x^2-x^2-7x-8x+15=0

We add all the numbers together, and all the variables

-15x+15=0

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

-15x=-15

x=-15/-15

x=1

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