Answer:
its easy
Step-by-step explanation:
for example for addition,
15+4/5
=here we will take the LCM of 1 and 5
LCM=5
to make the denominator 5 we should divide
15/1+4/5
=75/5+4/5
=79/5
for division,
3/2÷5/4
just wright the reciprocal of 5/4
=3/2×4/5
here no need to find LCM, u can just multiply the no. just next to it
=12/10 is the ans
