Add 7/45 and 1/20
7/45 + 1/20 is 37/180.
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,
7/45 = 7 × 4/45 × 4 = 28/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
1/20 = 1 × 9/20 × 9 = 9/180 - Add the two like fractions:
28/180 + 9/180 = 28 + 9/180 = 37/180 - So, 7/45 + 1/20 = 37/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45+1/20 7/45+2/20 7/90+1/20 7/45+1/40 21/45+1/20 7/45+3/20 7/45+1/60 35/45+1/20 7/45+5/20 49/45+1/20 7/45+7/20