Add 63/42 and 3/84
1st number: 1 21/42, 2nd number: 3/84
63/42 + 3/84 is 43/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
63/42 = 63 × 2/42 × 2 = 126/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
3/84 = 3 × 1/84 × 1 = 3/84 - Add the two like fractions:
126/84 + 3/84 = 126 + 3/84 = 129/84 - 129/84 simplified gives 43/28
- So, 63/42 + 3/84 = 43/28
In mixed form: 115/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/42+6/84 63/84+3/84 63/42+9/84 63/42+15/84 63/42+21/84