Add 20/40 and 10/7
1st number: 20/40, 2nd number: 1 3/7
20/40 + 10/7 is 27/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
20/40 = 20 × 7/40 × 7 = 140/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
10/7 = 10 × 40/7 × 40 = 400/280 - Add the two like fractions:
140/280 + 400/280 = 140 + 400/280 = 540/280 - 540/280 simplified gives 27/14
- So, 20/40 + 10/7 = 27/14
In mixed form: 113/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+20/7 20/80+10/7 20/40+10/14 60/40+10/7 20/40+30/7 20/40+10/21 20/40+50/7 20/40+10/35 20/40+70/7 20/40+10/49