Add 21/49 and 30/8
1st number: 21/49, 2nd number: 3 6/8
21/49 + 30/8 is 117/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 8 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 49 × 8 = 392,
21/49 = 21 × 8/49 × 8 = 168/392 - Likewise, for the 2nd fraction, since 8 × 49 = 392,
30/8 = 30 × 49/8 × 49 = 1470/392 - Add the two like fractions:
168/392 + 1470/392 = 168 + 1470/392 = 1638/392 - 1638/392 simplified gives 117/28
- So, 21/49 + 30/8 = 117/28
In mixed form: 45/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/49+30/8 21/49+60/8 21/98+30/8 21/49+30/16 63/49+30/8 21/49+90/8 21/49+30/24 21/49+30/40 21/49+30/56