Add 72/21 and 4/98, Solve 3 9/21 + 4/98 as a fraction

Add 72/21 and 4/98

1^st number: 3 9/21, 2^nd number: 4/98

72/21 + 4/98 is 170/49.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 98 is 294

Next, find the equivalent fraction of both fractional numbers with denominator 294
For the 1st fraction, since 21 × 14 = 294,
72/21 = 72 × 14/21 × 14 = 1008/294
Likewise, for the 2nd fraction, since 98 × 3 = 294,
4/98 = 4 × 3/98 × 3 = 12/294
Add the two like fractions:
1008/294 + 12/294 = 1008 + 12/294 = 1020/294
1020/294 simplified gives 170/49
So, 72/21 + 4/98 = 170/49
In mixed form: 323/49

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