Add 21/72 and 90/98
21/72 + 90/98 is 1423/1176.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 98 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 72 × 49 = 3528,
21/72 = 21 × 49/72 × 49 = 1029/3528 - Likewise, for the 2nd fraction, since 98 × 36 = 3528,
90/98 = 90 × 36/98 × 36 = 3240/3528 - Add the two like fractions:
1029/3528 + 3240/3528 = 1029 + 3240/3528 = 4269/3528 - 4269/3528 simplified gives 1423/1176
- So, 21/72 + 90/98 = 1423/1176
In mixed form: 1247/1176
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