Add 20/7 and 10/40
1st number: 2 6/7, 2nd number: 10/40
20/7 + 10/40 is 87/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
20/7 = 20 × 40/7 × 40 = 800/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
10/40 = 10 × 7/40 × 7 = 70/280 - Add the two like fractions:
800/280 + 70/280 = 800 + 70/280 = 870/280 - 870/280 simplified gives 87/28
- So, 20/7 + 10/40 = 87/28
In mixed form: 33/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/7+10/40 20/7+20/40 20/14+10/40 20/7+10/80 60/7+10/40 20/7+30/40 20/21+10/40 20/7+50/40 20/35+10/40 20/7+70/40 20/49+10/40