Add 4/42 and 63/40
1st number: 4/42, 2nd number: 1 23/40
4/42 + 63/40 is 1403/840.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
4/42 = 4 × 20/42 × 20 = 80/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
63/40 = 63 × 21/40 × 21 = 1323/840 - Add the two like fractions:
80/840 + 1323/840 = 80 + 1323/840 = 1403/840 - So, 4/42 + 63/40 = 1403/840
In mixed form: 1563/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42+63/40 4/84+63/40 4/42+63/80 12/42+63/40 20/42+63/40 28/42+63/40