Question

How do you solve `\frac { 3} { x + 2} = \frac { x - 2} { 7}`?

Answer 1

`x=5 **or** x=-5`

Explanation:

`3/(x+2)=(x-2)/7`. By cross multiplication, `(x+2)(x-2)=21 or x^2-4=21 or x^2=25 or x=+-5`[Ans]