Add 16/8 and 63/21
1st number: 2 0/8, 2nd number: 3 0/21
16/8 + 63/21 is 5/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
16/8 = 16 × 21/8 × 21 = 336/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
63/21 = 63 × 8/21 × 8 = 504/168 - Add the two like fractions:
336/168 + 504/168 = 336 + 504/168 = 840/168 - 840/168 simplified gives 5/1
- So, 16/8 + 63/21 = 5/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/8+63/21 16/8+63/42 48/8+63/21 16/24+63/21 80/8+63/21 16/40+63/21 16/56+63/21