Add 30/56 and 15/80
30/56 + 15/80 is 81/112.
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,
15/80 = 15 × 7/80 × 7 = 105/560 - Add the two like fractions:
300/560 + 105/560 = 300 + 105/560 = 405/560 - 405/560 simplified gives 81/112
- So, 30/56 + 15/80 = 81/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/56+15/80 30/56+30/80 90/56+15/80 30/56+45/80 30/56+75/80