Add 16/20 and 21/27
16/20 + 21/27 is 71/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
16/20 = 16 × 27/20 × 27 = 432/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
21/27 = 21 × 20/27 × 20 = 420/540 - Add the two like fractions:
432/540 + 420/540 = 432 + 420/540 = 852/540 - 852/540 simplified gives 71/45
- So, 16/20 + 21/27 = 71/45
In mixed form: 126/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/20+21/27 16/20+42/27 16/40+21/27 16/20+21/54 48/20+21/27 16/20+63/27 16/60+21/27 16/20+21/81 80/20+21/27