Add 25/7 and 45/20
1st number: 3 4/7, 2nd number: 2 5/20
25/7 + 45/20 is 163/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
25/7 = 25 × 20/7 × 20 = 500/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
45/20 = 45 × 7/20 × 7 = 315/140 - Add the two like fractions:
500/140 + 315/140 = 500 + 315/140 = 815/140 - 815/140 simplified gives 163/28
- So, 25/7 + 45/20 = 163/28
In mixed form: 523/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/7+45/20 25/7+90/20 25/14+45/20 25/7+45/40 75/7+45/20 25/21+45/20 25/7+45/60 25/35+45/20 25/49+45/20