Add 27/60 and 18/70
27/60 + 18/70 is 99/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
27/60 = 27 × 7/60 × 7 = 189/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
18/70 = 18 × 6/70 × 6 = 108/420 - Add the two like fractions:
189/420 + 108/420 = 189 + 108/420 = 297/420 - 297/420 simplified gives 99/140
- So, 27/60 + 18/70 = 99/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/60+18/70 27/60+36/70 81/60+18/70 27/60+54/70 27/60+90/70