Add 72/98 and 28/21
1st number: 72/98, 2nd number: 1 7/21
72/98 + 28/21 is 304/147.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 21 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 98 × 3 = 294,
72/98 = 72 × 3/98 × 3 = 216/294 - Likewise, for the 2nd fraction, since 21 × 14 = 294,
28/21 = 28 × 14/21 × 14 = 392/294 - Add the two like fractions:
216/294 + 392/294 = 216 + 392/294 = 608/294 - 608/294 simplified gives 304/147
- So, 72/98 + 28/21 = 304/147
In mixed form: 210/147
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