Add 21/98 and 20/72
21/98 + 20/72 is 31/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 72 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 98 × 36 = 3528,
21/98 = 21 × 36/98 × 36 = 756/3528 - Likewise, for the 2nd fraction, since 72 × 49 = 3528,
20/72 = 20 × 49/72 × 49 = 980/3528 - Add the two like fractions:
756/3528 + 980/3528 = 756 + 980/3528 = 1736/3528 - 1736/3528 simplified gives 31/63
- So, 21/98 + 20/72 = 31/63
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