Add 81/5 and 98/21
1st number: 16 1/5, 2nd number: 4 14/21
81/5 + 98/21 is 313/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
81/5 = 81 × 21/5 × 21 = 1701/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
98/21 = 98 × 5/21 × 5 = 490/105 - Add the two like fractions:
1701/105 + 490/105 = 1701 + 490/105 = 2191/105 - 2191/105 simplified gives 313/15
- So, 81/5 + 98/21 = 313/15
In mixed form: 2013/15
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