For example you have 6/8 =3/4
To find that equvialent fraction you would have to find the greatest common factor..... so a number that can be divided to both 6 and 8 to make the numerator and denominator easier to work with.
6 has factorof 1,2,3,6
8 has factors of1,2,4,8.
So the greatest one in both is 2
Then divide 6 by 2=3 and 8 by 2= 4
the fraction becomes 3/4
HOPE I HELPED<HMU IF YOU HAVE QUESTIONS