Add 20/90 and 1/45
20/90 + 1/45 is 11/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
1/45 = 1 × 2/45 × 2 = 2/90 - Add the two like fractions:
20/90 + 2/90 = 20 + 2/90 = 22/90 - 22/90 simplified gives 11/45
- So, 20/90 + 1/45 = 11/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+1/45 20/90+2/45 20/90+1/90 60/90+1/45 20/90+3/45 20/90+5/45 20/90+7/45