To create equivalent fractions, we must multiply the numerator and denominator of a fraction by the SAME MAGIC NUMBER.
Example
Find the values of the letters that make these fractions equivalent.

= 

= 

Solution

= 


Here the magic number is 6 because 60 ÷ 10 = 6
So if we multiply top and bottom by 6 we get an equivalent fraction.
So A = 6 x 3 = 18

= 


Here the magic number is 4 because 12 ÷ 3 = 4
So if we multiply top and bottom by 4 we get an equivalent fraction.
So B = 10 x 4 = 40
Answer

= 

= 
