Add 81/21 and 10/60
1st number: 3 18/21, 2nd number: 10/60
81/21 + 10/60 is 169/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
81/21 = 81 × 20/21 × 20 = 1620/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
10/60 = 10 × 7/60 × 7 = 70/420 - Add the two like fractions:
1620/420 + 70/420 = 1620 + 70/420 = 1690/420 - 1690/420 simplified gives 169/42
- So, 81/21 + 10/60 = 169/42
In mixed form: 41/42
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