Add 80/56 and 18/45
1st number: 1 24/56, 2nd number: 18/45
80/56 + 18/45 is 64/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
80/56 = 80 × 45/56 × 45 = 3600/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
18/45 = 18 × 56/45 × 56 = 1008/2520 - Add the two like fractions:
3600/2520 + 1008/2520 = 3600 + 1008/2520 = 4608/2520 - 4608/2520 simplified gives 64/35
- So, 80/56 + 18/45 = 64/35
In mixed form: 129/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/56+36/45 80/56+18/90 80/56+54/45 80/56+90/45