Add 80/7 and 40/8
1st number: 11 3/7, 2nd number: 5 0/8
80/7 + 40/8 is 115/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
80/7 = 80 × 8/7 × 8 = 640/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
40/8 = 40 × 7/8 × 7 = 280/56 - Add the two like fractions:
640/56 + 280/56 = 640 + 280/56 = 920/56 - 920/56 simplified gives 115/7
- So, 80/7 + 40/8 = 115/7
In mixed form: 163/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7+80/8 80/14+40/8 80/7+40/16 80/21+40/8 80/7+40/24 80/35+40/8 80/49+40/8 80/7+40/56