Add 9/40 and 12/56
9/40 + 12/56 is 123/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 56 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 56 × 5 = 280,
12/56 = 12 × 5/56 × 5 = 60/280 - Add the two like fractions:
63/280 + 60/280 = 63 + 60/280 = 123/280 - So, 9/40 + 12/56 = 123/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40+12/56 9/40+24/56 9/80+12/56 27/40+12/56 9/40+36/56 45/40+12/56 9/40+60/56 63/40+12/56 9/40+84/56