Add 18/21 and 84/98
18/21 + 84/98 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 98 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 21 × 14 = 294,
18/21 = 18 × 14/21 × 14 = 252/294 - Likewise, for the 2nd fraction, since 98 × 3 = 294,
84/98 = 84 × 3/98 × 3 = 252/294 - Add the two like fractions:
252/294 + 252/294 = 252 + 252/294 = 504/294 - 504/294 simplified gives 12/7
- So, 18/21 + 84/98 = 12/7
In mixed form: 15/7
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