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

Add 72/21 and 8/72

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

72/21 + 8/72 is 223/63.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 21 × 24 = 504,
72/21 = 72 × 24/21 × 24 = 1728/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
8/72 = 8 × 7/72 × 7 = 56/504
Add the two like fractions:
1728/504 + 56/504 = 1728 + 56/504 = 1784/504
1784/504 simplified gives 223/63
So, 72/21 + 8/72 = 223/63
In mixed form: 334/63

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