Add 40/7 and 20/40
1st number: 5 5/7, 2nd number: 20/40
40/7 + 20/40 is 87/14.
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,
40/7 = 40 × 40/7 × 40 = 1600/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
20/40 = 20 × 7/40 × 7 = 140/280 - Add the two like fractions:
1600/280 + 140/280 = 1600 + 140/280 = 1740/280 - 1740/280 simplified gives 87/14
- So, 40/7 + 20/40 = 87/14
In mixed form: 63/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7+20/40 40/14+20/40 40/7+20/80 40/7+60/40 40/21+20/40 40/35+20/40 40/49+20/40