Add 21/98 and 30/72
21/98 + 30/72 is 53/84.
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,
30/72 = 30 × 49/72 × 49 = 1470/3528 - Add the two like fractions:
756/3528 + 1470/3528 = 756 + 1470/3528 = 2226/3528 - 2226/3528 simplified gives 53/84
- So, 21/98 + 30/72 = 53/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98+30/72 21/98+60/72 63/98+30/72 21/98+90/72