Add 70/45 and 21/98
1st number: 1 25/45, 2nd number: 21/98
70/45 + 21/98 is 223/126.
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,
70/45 = 70 × 98/45 × 98 = 6860/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
21/98 = 21 × 45/98 × 45 = 945/4410 - Add the two like fractions:
6860/4410 + 945/4410 = 6860 + 945/4410 = 7805/4410 - 7805/4410 simplified gives 223/126
- So, 70/45 + 21/98 = 223/126
In mixed form: 197/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45+42/98 70/90+21/98 70/45+63/98