Converting the fraction63 into itssimplest form.
63=2=21
∴LCM for the fractions12,21,45,32,34 is 20.
Multiplying the lcm in numerator and denominator,
⟹12=1020
⟹21=4020
⟹45=1620
⟹32=3020
⟹34=1520
Now that the denominator is equal, we can compare the fractions. The numerator 40 is the greatest and 10 is the least. Hence, the corresponding original fractions will be the greatest and the least.
∴ Greatest fraction = 63 = 2 and the smallest fraction = 12