Add 10/40 and 20/56
10/40 + 20/56 is 17/28.
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,
10/40 = 10 × 7/40 × 7 = 70/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
20/56 = 20 × 5/56 × 5 = 100/280 - Add the two like fractions:
70/280 + 100/280 = 70 + 100/280 = 170/280 - 170/280 simplified gives 17/28
- So, 10/40 + 20/56 = 17/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+20/56 10/40+40/56 10/80+20/56 30/40+20/56 10/40+60/56 50/40+20/56 70/40+20/56