Add 20/5 and 2/7
1st number: 4 0/5, 2nd number: 2/7
20/5 + 2/7 is 30/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
20/5 = 20 × 7/5 × 7 = 140/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
2/7 = 2 × 5/7 × 5 = 10/35 - Add the two like fractions:
140/35 + 10/35 = 140 + 10/35 = 150/35 - 150/35 simplified gives 30/7
- So, 20/5 + 2/7 = 30/7
In mixed form: 42/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5+2/7 20/5+4/7 20/10+2/7 20/5+2/14 60/5+2/7 20/5+6/7 20/15+2/7 20/5+2/21 20/5+10/7 20/25+2/7 20/5+2/35 20/5+14/7 20/35+2/7 20/5+2/49