Add 21/45 and 18/98
21/45 + 18/98 is 478/735.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 98 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 45 × 98 = 4410,
21/45 = 21 × 98/45 × 98 = 2058/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
18/98 = 18 × 45/98 × 45 = 810/4410 - Add the two like fractions:
2058/4410 + 810/4410 = 2058 + 810/4410 = 2868/4410 - 2868/4410 simplified gives 478/735
- So, 21/45 + 18/98 = 478/735
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45+18/98 21/45+36/98 21/90+18/98 63/45+18/98 21/45+54/98 21/45+90/98