Add 3/45 and 10/20
3/45 + 10/20 is 17/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
3/45 = 3 × 4/45 × 4 = 12/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
10/20 = 10 × 9/20 × 9 = 90/180 - Add the two like fractions:
12/180 + 90/180 = 12 + 90/180 = 102/180 - 102/180 simplified gives 17/30
- So, 3/45 + 10/20 = 17/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/45+10/20 3/90+10/20 3/45+10/40 9/45+10/20 3/45+30/20 3/45+10/60 15/45+10/20 3/45+50/20 21/45+10/20 3/45+70/20