Add 42/7 and 54/80
1st number: 6 0/7, 2nd number: 54/80
42/7 + 54/80 is 267/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
42/7 = 42 × 80/7 × 80 = 3360/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
54/80 = 54 × 7/80 × 7 = 378/560 - Add the two like fractions:
3360/560 + 378/560 = 3360 + 378/560 = 3738/560 - 3738/560 simplified gives 267/40
- So, 42/7 + 54/80 = 267/40
In mixed form: 627/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7+54/80 42/14+54/80 42/21+54/80 42/35+54/80 42/49+54/80