Add 8/7 and 54/80
1st number: 1 1/7, 2nd number: 54/80
8/7 + 54/80 is 509/280.
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,
8/7 = 8 × 80/7 × 80 = 640/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
54/80 = 54 × 7/80 × 7 = 378/560 - Add the two like fractions:
640/560 + 378/560 = 640 + 378/560 = 1018/560 - 1018/560 simplified gives 509/280
- So, 8/7 + 54/80 = 509/280
In mixed form: 1229/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/7+54/80 8/14+54/80 24/7+54/80 8/21+54/80 40/7+54/80 8/35+54/80 56/7+54/80 8/49+54/80