Add 81/45 and 5/21
1st number: 1 36/45, 2nd number: 5/21
81/45 + 5/21 is 214/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
81/45 = 81 × 7/45 × 7 = 567/315 - Likewise, for the 2nd fraction, since 21 × 15 = 315,
5/21 = 5 × 15/21 × 15 = 75/315 - Add the two like fractions:
567/315 + 75/315 = 567 + 75/315 = 642/315 - 642/315 simplified gives 214/105
- So, 81/45 + 5/21 = 214/105
In mixed form: 24/105
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