Add 21/40 and 32/30
1st number: 21/40, 2nd number: 1 2/30
21/40 + 32/30 is 191/120.
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,
21/40 = 21 × 3/40 × 3 = 63/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
32/30 = 32 × 4/30 × 4 = 128/120 - Add the two like fractions:
63/120 + 128/120 = 63 + 128/120 = 191/120 - So, 21/40 + 32/30 = 191/120
In mixed form: 171/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40+32/30 21/40+64/30 21/80+32/30 21/40+32/60 63/40+32/30 21/40+96/30 21/40+32/90