Add 21/40 and 16/60
21/40 + 16/60 is 19/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 60 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 60 × 2 = 120,
16/60 = 16 × 2/60 × 2 = 32/120 - Add the two like fractions:
63/120 + 32/120 = 63 + 32/120 = 95/120 - 95/120 simplified gives 19/24
- So, 21/40 + 16/60 = 19/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40+16/60 21/40+32/60 21/80+16/60 63/40+16/60 21/40+48/60 21/40+80/60