Add 21/98 and 18/5
1st number: 21/98, 2nd number: 3 3/5
21/98 + 18/5 is 267/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 5 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
21/98 = 21 × 5/98 × 5 = 105/490 - Likewise, for the 2nd fraction, since 5 × 98 = 490,
18/5 = 18 × 98/5 × 98 = 1764/490 - Add the two like fractions:
105/490 + 1764/490 = 105 + 1764/490 = 1869/490 - 1869/490 simplified gives 267/70
- So, 21/98 + 18/5 = 267/70
In mixed form: 357/70
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