Add 30/56 and 45/80
30/56 + 45/80 is 123/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 56 × 10 = 560,
30/56 = 30 × 10/56 × 10 = 300/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
45/80 = 45 × 7/80 × 7 = 315/560 - Add the two like fractions:
300/560 + 315/560 = 300 + 315/560 = 615/560 - 615/560 simplified gives 123/112
- So, 30/56 + 45/80 = 123/112
In mixed form: 111/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/56+45/80 30/56+90/80 90/56+45/80