Add 21/60 and 35/56
21/60 + 35/56 is 39/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 60 × 14 = 840,
21/60 = 21 × 14/60 × 14 = 294/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
35/56 = 35 × 15/56 × 15 = 525/840 - Add the two like fractions:
294/840 + 525/840 = 294 + 525/840 = 819/840 - 819/840 simplified gives 39/40
- So, 21/60 + 35/56 = 39/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60+35/56 21/60+70/56 63/60+35/56