Add 40/42 and 63/7
1st number: 40/42, 2nd number: 9 0/7
40/42 + 63/7 is 209/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
40/42 = 40 × 1/42 × 1 = 40/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
63/7 = 63 × 6/7 × 6 = 378/42 - Add the two like fractions:
40/42 + 378/42 = 40 + 378/42 = 418/42 - 418/42 simplified gives 209/21
- So, 40/42 + 63/7 = 209/21
In mixed form: 920/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42+63/7 40/84+63/7 40/42+63/14 40/42+63/21 40/42+63/35 40/42+63/49