Add 81/42 and 21/98
1st number: 1 39/42, 2nd number: 21/98
81/42 + 21/98 is 15/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 98 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 42 × 7 = 294,
81/42 = 81 × 7/42 × 7 = 567/294 - Likewise, for the 2nd fraction, since 98 × 3 = 294,
21/98 = 21 × 3/98 × 3 = 63/294 - Add the two like fractions:
567/294 + 63/294 = 567 + 63/294 = 630/294 - 630/294 simplified gives 15/7
- So, 81/42 + 21/98 = 15/7
In mixed form: 21/7
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