Add 45/20 and 30/7
1st number: 2 5/20, 2nd number: 4 2/7
45/20 + 30/7 is 183/28.
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,
30/7 = 30 × 20/7 × 20 = 600/140 - Add the two like fractions:
315/140 + 600/140 = 315 + 600/140 = 915/140 - 915/140 simplified gives 183/28
- So, 45/20 + 30/7 = 183/28
In mixed form: 615/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20+30/7 45/20+60/7 45/40+30/7 45/20+30/14 45/20+90/7 45/60+30/7 45/20+30/21 45/20+30/35 45/20+30/49