(x-1)(x+7)=(x-1)(x+3)

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Solution for (x-1)(x+7)=(x-1)(x+3) equation: 



(x-1)(x+7)=(x-1)(x+3)

We move all terms to the left:

(x-1)(x+7)-((x-1)(x+3))=0

We multiply parentheses ..

(+x^2+7x-1x-7)-((x-1)(x+3))=0



We calculate terms in parentheses: -((x-1)(x+3)), so:

(x-1)(x+3)

We multiply parentheses ..

(+x^2+3x-1x-3)

We get rid of parentheses

x^2+3x-1x-3

We add all the numbers together, and all the variables

x^2+2x-3

Back to the equation:

-(x^2+2x-3)



We get rid of parentheses

x^2-x^2+7x-1x-2x-7+3=0

We add all the numbers together, and all the variables

4x-4=0

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

4x=4

x=4/4

x=1

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