Add 80/7 and 45/40
1st number: 11 3/7, 2nd number: 1 5/40
80/7 + 45/40 is 703/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
80/7 = 80 × 40/7 × 40 = 3200/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
45/40 = 45 × 7/40 × 7 = 315/280 - Add the two like fractions:
3200/280 + 315/280 = 3200 + 315/280 = 3515/280 - 3515/280 simplified gives 703/56
- So, 80/7 + 45/40 = 703/56
In mixed form: 1231/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7+90/40 80/14+45/40 80/7+45/80 80/21+45/40 80/35+45/40 80/49+45/40