Add 10/20 and 45/18
1st number: 10/20, 2nd number: 2 9/18
10/20 + 45/18 is 3/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
10/20 = 10 × 9/20 × 9 = 90/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
45/18 = 45 × 10/18 × 10 = 450/180 - Add the two like fractions:
90/180 + 450/180 = 90 + 450/180 = 540/180 - 540/180 simplified gives 3/1
- So, 10/20 + 45/18 = 3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20+90/18 10/40+45/18 10/20+45/36 30/20+45/18 10/60+45/18 10/20+45/54 50/20+45/18 10/20+45/90 70/20+45/18