Add 21/98 and 15/42
21/98 + 15/42 is 4/7.
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,
15/42 = 15 × 7/42 × 7 = 105/294 - Add the two like fractions:
63/294 + 105/294 = 63 + 105/294 = 168/294 - 168/294 simplified gives 4/7
- So, 21/98 + 15/42 = 4/7
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