if you means proper fractions like x/y where x is smaller than y then
remember that x times 1=x also remember that y/y=1 so also remember that [tex] \frac{xz}{yt} = \frac{x}{y} \frac{z}{t} [/tex]
lets say you have 10/35 we try to find ones 10=5 times 2 35=5 times 7 then split up the fraction [tex] \frac{10}{35} = \frac{2}{7} \frac{5}{5} = \frac{2}{7} 1=\frac{2}{7} [/tex]
