X/12=1/4
cross multiply
4x=12
clear the 4
x=3
substitute in original equation.
3/12=1/4
Also if you multiply the bottom number by 3 then you will get 12ths (3X4=12).
Now multiply the top number by 3 (3X1=3)
answer is 3/12
There are 3 because 3/12 equals 1/4.
I hope this helps you in your studies and have an awesome day!