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Add Three or More Fractions with Like Denominators

To add like fractions, add the numerators, and put the result over the common denominator.

For example:

1
12
+
2
12
+
5
12
=
1 + 2 + 5
12
=
8
12


Now, simplify:
 

8
12
=
8 ÷ 4
12 ÷ 4
=
2
3

 

So, 
1
12
+
2
12
+
5
12
=
2
3
.





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Help

The correct answer is

Remember :

The smallest number is the one that comes first while counting.

Solution :

To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.

21,27,23

21 is the smallest number.