Add 45/98 and 81/72
1st number: 45/98, 2nd number: 1 9/72
45/98 + 81/72 is 621/392.
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,
45/98 = 45 × 36/98 × 36 = 1620/3528 - Likewise, for the 2nd fraction, since 72 × 49 = 3528,
81/72 = 81 × 49/72 × 49 = 3969/3528 - Add the two like fractions:
1620/3528 + 3969/3528 = 1620 + 3969/3528 = 5589/3528 - 5589/3528 simplified gives 621/392
- So, 45/98 + 81/72 = 621/392
In mixed form: 1229/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/98+81/72