Add 20/30 and 6/45
20/30 + 6/45 is 4/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
20/30 = 20 × 3/30 × 3 = 60/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
6/45 = 6 × 2/45 × 2 = 12/90 - Add the two like fractions:
60/90 + 12/90 = 60 + 12/90 = 72/90 - 72/90 simplified gives 4/5
- So, 20/30 + 6/45 = 4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30+6/45 20/30+12/45 20/60+6/45 20/30+6/90 60/30+6/45 20/30+18/45 20/90+6/45 20/30+30/45 20/30+42/45