Add 14/15 and 90/21
1st number: 14/15, 2nd number: 4 6/21
14/15 + 90/21 is 548/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
14/15 = 14 × 7/15 × 7 = 98/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
90/21 = 90 × 5/21 × 5 = 450/105 - Add the two like fractions:
98/105 + 450/105 = 98 + 450/105 = 548/105 - So, 14/15 + 90/21 = 548/105
In mixed form: 523/105
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