# how to find out lcm of two unlike fractions ?what is the lcm of 1/4 and 5/6

Suppose $\frac{a}{b}$ and $\frac{c}{d}$ are two unlike fractions. The following steps show how to find the LCM of $\frac{a}{b}$ and $\frac{c}{d}$ .
1) Find the LCM of b and d = LCM(b,d)
2) Multiply numerator and denominator of first fraction by LCM(b,d)/b.
3) Multiply numerator and denominator of first fraction by LCM(b,d)/d.
4) After this multiplication, denominator of both fractions are same.
5) Find LCM of new numerators.

Now lets find the LCM of 1/4 and 5/6.
1) Find the LCM of 4 and 6 = 12
2) Multiply first fraction by $\frac{12}{4}$ = 3
Multiply the second fraction by $\frac{12}{6}$ = 2
So now first fraction is
and the second fraction is
3) Since both denominators are same, LCM of numerators 3 and 10 = 30
4) Hence LCM of $\frac{1}{4}$ and $\frac{5}{6}$ is $\frac{30}{12}$
After simplification $\frac{30}{12}$ = $\frac{5}{2}$
Therefore, LCM of 1/4 and 5/6 is $\frac{5}{2}$.

• -1

we should find the lcm of the denominators

lcm of 4 and 6 is 24. the LCM of the 1/4 and 5/6 is 24

• 1
What are you looking for?