Add 21/80 and 14/40
21/80 + 14/40 is 49/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
21/80 = 21 × 1/80 × 1 = 21/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
14/40 = 14 × 2/40 × 2 = 28/80 - Add the two like fractions:
21/80 + 28/80 = 21 + 28/80 = 49/80 - So, 21/80 + 14/40 = 49/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/80+14/40 21/80+28/40 21/80+14/80 63/80+14/40 21/80+42/40 21/80+70/40 21/80+98/40