Add 20/45 and 1/30
20/45 + 1/30 is 43/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
20/45 = 20 × 2/45 × 2 = 40/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
1/30 = 1 × 3/30 × 3 = 3/90 - Add the two like fractions:
40/90 + 3/90 = 40 + 3/90 = 43/90 - So, 20/45 + 1/30 = 43/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45+1/30 20/45+2/30 20/90+1/30 20/45+1/60 60/45+1/30 20/45+3/30 20/45+1/90 20/45+5/30 20/45+7/30