Add 40/8 and 21/49
1st number: 5 0/8, 2nd number: 21/49
40/8 + 21/49 is 38/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 49 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 8 × 49 = 392,
40/8 = 40 × 49/8 × 49 = 1960/392 - Likewise, for the 2nd fraction, since 49 × 8 = 392,
21/49 = 21 × 8/49 × 8 = 168/392 - Add the two like fractions:
1960/392 + 168/392 = 1960 + 168/392 = 2128/392 - 2128/392 simplified gives 38/7
- So, 40/8 + 21/49 = 38/7
In mixed form: 53/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/8+21/49 40/8+42/49 40/16+21/49 40/8+21/98 40/8+63/49 40/24+21/49 40/56+21/49