Add 9/40 and 27/70
9/40 + 27/70 is 171/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
27/70 = 27 × 4/70 × 4 = 108/280 - Add the two like fractions:
63/280 + 108/280 = 63 + 108/280 = 171/280 - So, 9/40 + 27/70 = 171/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40+27/70 9/40+54/70 9/80+27/70 27/40+27/70 9/40+81/70 45/40+27/70 63/40+27/70