Add 63/2 and 8/21
1st number: 31 1/2, 2nd number: 8/21
63/2 + 8/21 is 1339/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
63/2 = 63 × 21/2 × 21 = 1323/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
8/21 = 8 × 2/21 × 2 = 16/42 - Add the two like fractions:
1323/42 + 16/42 = 1323 + 16/42 = 1339/42 - So, 63/2 + 8/21 = 1339/42
In mixed form: 3137/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/2+16/21 63/4+8/21 63/2+8/42 63/2+24/21 63/6+8/21 63/2+8/63 63/2+40/21 63/10+8/21 63/2+56/21 63/14+8/21