Add 45/20 and 98/70
1st number: 2 5/20, 2nd number: 1 28/70
45/20 + 98/70 is 73/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
45/20 = 45 × 7/20 × 7 = 315/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
98/70 = 98 × 2/70 × 2 = 196/140 - Add the two like fractions:
315/140 + 196/140 = 315 + 196/140 = 511/140 - 511/140 simplified gives 73/20
- So, 45/20 + 98/70 = 73/20
In mixed form: 313/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20+98/70 45/40+98/70 45/60+98/70