Add 72/98 and 21/30
72/98 + 21/30 is 703/490.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 98 × 15 = 1470,
72/98 = 72 × 15/98 × 15 = 1080/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
21/30 = 21 × 49/30 × 49 = 1029/1470 - Add the two like fractions:
1080/1470 + 1029/1470 = 1080 + 1029/1470 = 2109/1470 - 2109/1470 simplified gives 703/490
- So, 72/98 + 21/30 = 703/490
In mixed form: 1213/490
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