Add 18/40 and 1/56
18/40 + 1/56 is 131/280.
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,
18/40 = 18 × 7/40 × 7 = 126/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
1/56 = 1 × 5/56 × 5 = 5/280 - Add the two like fractions:
126/280 + 5/280 = 126 + 5/280 = 131/280 - So, 18/40 + 1/56 = 131/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+1/56 18/40+2/56 18/80+1/56 54/40+1/56 18/40+3/56 90/40+1/56 18/40+5/56 18/40+7/56