Add 27/40 and 15/84
27/40 + 15/84 is 239/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 84 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
27/40 = 27 × 21/40 × 21 = 567/840 - Likewise, for the 2nd fraction, since 84 × 10 = 840,
15/84 = 15 × 10/84 × 10 = 150/840 - Add the two like fractions:
567/840 + 150/840 = 567 + 150/840 = 717/840 - 717/840 simplified gives 239/280
- So, 27/40 + 15/84 = 239/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40+15/84 27/40+30/84 27/80+15/84 81/40+15/84 27/40+45/84 27/40+75/84