Add 21/72 and 75/8, Solve 21/72 + 9 3/8 as a fraction

Add 21/72 and 75/8

1^st number: 21/72, 2^nd number: 9 3/8

21/72 + 75/8 is 29/3.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 8 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72
Likewise, for the 2nd fraction, since 8 × 9 = 72,
75/8 = 75 × 9/8 × 9 = 675/72
Add the two like fractions:
21/72 + 675/72 = 21 + 675/72 = 696/72
696/72 simplified gives 29/3
So, 21/72 + 75/8 = 29/3
In mixed form: 92/3

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