Add 21/98 and 18/15
1st number: 21/98, 2nd number: 1 3/15
21/98 + 18/15 is 99/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 15 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 98 × 15 = 1470,
21/98 = 21 × 15/98 × 15 = 315/1470 - Likewise, for the 2nd fraction, since 15 × 98 = 1470,
18/15 = 18 × 98/15 × 98 = 1764/1470 - Add the two like fractions:
315/1470 + 1764/1470 = 315 + 1764/1470 = 2079/1470 - 2079/1470 simplified gives 99/70
- So, 21/98 + 18/15 = 99/70
In mixed form: 129/70
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