Add 45/20 and 36/7
1st number: 2 5/20, 2nd number: 5 1/7
45/20 + 36/7 is 207/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
45/20 = 45 × 7/20 × 7 = 315/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
36/7 = 36 × 20/7 × 20 = 720/140 - Add the two like fractions:
315/140 + 720/140 = 315 + 720/140 = 1035/140 - 1035/140 simplified gives 207/28
- So, 45/20 + 36/7 = 207/28
In mixed form: 711/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20+36/7 45/20+72/7 45/40+36/7 45/20+36/14 45/60+36/7 45/20+36/21 45/20+36/35 45/20+36/49