Add 36/18 and 63/42
1st number: 2 0/18, 2nd number: 1 21/42
36/18 + 63/42 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
36/18 = 36 × 7/18 × 7 = 252/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
63/42 = 63 × 3/42 × 3 = 189/126 - Add the two like fractions:
252/126 + 189/126 = 252 + 189/126 = 441/126 - 441/126 simplified gives 7/2
- So, 36/18 + 63/42 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/18+63/42 36/18+63/84 36/54+63/42 36/90+63/42