Question

I have to find the value if X but how do I do it with a fraction ?

Answer 1

Hello,

if 2/6=10/30 then 2*30=6*10 (60=60). [cross products}


`(1)/(x-4) = (2)/(x+7) \\\\ If \ x \\eq 4\ and\ x \\eq -7\ then \\\\ 1*(x+7)=2*(x-4)\\\\ x+7=2x-8\\\\ x=15\\\\`
Sol={15}

Answer 2

first of all you need to push the restrictions for x so x not can being never equal 4 and -7 because than these denominators will be equal zero and these fractions undefined

1/(x-4) = 2/(x+7) cross multiple and will get

x+7 = 2(x-4)

x+7=2x-8

x = 15

hope this helped