Add 20/7 and 45/30
1st number: 2 6/7, 2nd number: 1 15/30
20/7 + 45/30 is 61/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
20/7 = 20 × 30/7 × 30 = 600/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
45/30 = 45 × 7/30 × 7 = 315/210 - Add the two like fractions:
600/210 + 315/210 = 600 + 315/210 = 915/210 - 915/210 simplified gives 61/14
- So, 20/7 + 45/30 = 61/14
In mixed form: 45/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/7+45/30 20/7+90/30 20/14+45/30 20/7+45/60 60/7+45/30 20/21+45/30 20/7+45/90 20/35+45/30 20/49+45/30