Add 15/80 and 20/56
15/80 + 20/56 is 61/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 56 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
15/80 = 15 × 7/80 × 7 = 105/560 - Likewise, for the 2nd fraction, since 56 × 10 = 560,
20/56 = 20 × 10/56 × 10 = 200/560 - Add the two like fractions:
105/560 + 200/560 = 105 + 200/560 = 305/560 - 305/560 simplified gives 61/112
- So, 15/80 + 20/56 = 61/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/80+20/56 15/80+40/56 45/80+20/56 15/80+60/56 75/80+20/56