Add 80/7 and 45/54
1st number: 11 3/7, 2nd number: 45/54
80/7 + 45/54 is 515/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 7 × 54 = 378,
80/7 = 80 × 54/7 × 54 = 4320/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
45/54 = 45 × 7/54 × 7 = 315/378 - Add the two like fractions:
4320/378 + 315/378 = 4320 + 315/378 = 4635/378 - 4635/378 simplified gives 515/42
- So, 80/7 + 45/54 = 515/42
In mixed form: 1211/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7+90/54 80/14+45/54 80/21+45/54 80/35+45/54 80/49+45/54