Add 72/24 and 63/42, Solve 3 0/24 + 1 21/42 as a fraction

Add 72/24 and 63/42

1^st number: 3 0/24, 2^nd number: 1 21/42

72/24 + 63/42 is 9/2.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 42 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 24 × 7 = 168,
72/24 = 72 × 7/24 × 7 = 504/168
Likewise, for the 2nd fraction, since 42 × 4 = 168,
63/42 = 63 × 4/42 × 4 = 252/168
Add the two like fractions:
504/168 + 252/168 = 504 + 252/168 = 756/168
756/168 simplified gives 9/2
So, 72/24 + 63/42 = 9/2
In mixed form: 41/2

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