Add 20/40 and 48/30
1st number: 20/40, 2nd number: 1 18/30
20/40 + 48/30 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
20/40 = 20 × 3/40 × 3 = 60/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
48/30 = 48 × 4/30 × 4 = 192/120 - Add the two like fractions:
60/120 + 192/120 = 60 + 192/120 = 252/120 - 252/120 simplified gives 21/10
- So, 20/40 + 48/30 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+96/30 20/80+48/30 20/40+48/60 60/40+48/30 20/40+48/90