Add 60/18 and 81/21
1st number: 3 6/18, 2nd number: 3 18/21
60/18 + 81/21 is 151/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
60/18 = 60 × 7/18 × 7 = 420/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
81/21 = 81 × 6/21 × 6 = 486/126 - Add the two like fractions:
420/126 + 486/126 = 420 + 486/126 = 906/126 - 906/126 simplified gives 151/21
- So, 60/18 + 81/21 = 151/21
In mixed form: 74/21
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