While adding or subtracting fractions, we have to consider the following.

i) Check if the given fractions are like or unlike fractions.

ii) If they are like fractions, we have to put the denominator once and add or subtract numerators.

iii)  If they are unlike fractions, we have to find the LCM and make the denominator same and follow the step given above.

iv) After adding or subtracting fractions do the possible simplification as much. Incase we find the improper fraction, we have to write it as mixed fraction.

Using the previously shown method, write just the LCD for the following sets of fractions.

Problem 1 :

Solution:

Problem 2 :

Solution:

Problem 3 :

Solution:

Problem 4 :

Solution:

Problem 5 :

Solution:

Problem 6 :

Solution:

Problem 7 :

Solution:

Problem 8 :

Solution:

1  59/40 = 1 + 1  19/40

= 2   19/40

So, the answer is 2  19/40

Problem 9 :

Solution:

Problem 10 :

Solution:

Problem 11 :

Solution:

Problem 12 :

Solution:

Problem 13 :

Solution:

Problem 14 :

Solution:

Problem 15 :

Solution:

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