Add 21/98 and 63/42
1st number: 21/98, 2nd number: 1 21/42
21/98 + 63/42 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 42 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 98 × 3 = 294,
21/98 = 21 × 3/98 × 3 = 63/294 - Likewise, for the 2nd fraction, since 42 × 7 = 294,
63/42 = 63 × 7/42 × 7 = 441/294 - Add the two like fractions:
63/294 + 441/294 = 63 + 441/294 = 504/294 - 504/294 simplified gives 12/7
- So, 21/98 + 63/42 = 12/7
In mixed form: 15/7
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