Add 18/40 and 7/56
18/40 + 7/56 is 23/40.
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,
7/56 = 7 × 5/56 × 5 = 35/280 - Add the two like fractions:
126/280 + 35/280 = 126 + 35/280 = 161/280 - 161/280 simplified gives 23/40
- So, 18/40 + 7/56 = 23/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+7/56 18/40+14/56 18/80+7/56 54/40+7/56 18/40+21/56 90/40+7/56 18/40+35/56 18/40+49/56