Add 75/80 and 81/56
1st number: 75/80, 2nd number: 1 25/56
75/80 + 81/56 is 267/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 56 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
75/80 = 75 × 7/80 × 7 = 525/560 - Likewise, for the 2nd fraction, since 56 × 10 = 560,
81/56 = 81 × 10/56 × 10 = 810/560 - Add the two like fractions:
525/560 + 810/560 = 525 + 810/560 = 1335/560 - 1335/560 simplified gives 267/112
- So, 75/80 + 81/56 = 267/112
In mixed form: 243/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: