Add 80/15 and 45/56
1st number: 5 5/15, 2nd number: 45/56
80/15 + 45/56 is 1031/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
80/15 = 80 × 56/15 × 56 = 4480/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
45/56 = 45 × 15/56 × 15 = 675/840 - Add the two like fractions:
4480/840 + 675/840 = 4480 + 675/840 = 5155/840 - 5155/840 simplified gives 1031/168
- So, 80/15 + 45/56 = 1031/168
In mixed form: 623/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+90/56 80/30+45/56 80/45+45/56 80/75+45/56