Add 72/21 and 49/16, Solve 3 9/21 + 3 1/16 as a fraction

Add 72/21 and 49/16

1^st number: 3 9/21, 2^nd number: 3 1/16

72/21 + 49/16 is 727/112.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 21 × 16 = 336,
72/21 = 72 × 16/21 × 16 = 1152/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
49/16 = 49 × 21/16 × 21 = 1029/336
Add the two like fractions:
1152/336 + 1029/336 = 1152 + 1029/336 = 2181/336
2181/336 simplified gives 727/112
So, 72/21 + 49/16 = 727/112
In mixed form: 655/112

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