Add 81/18 and 36/63
1st number: 4 9/18, 2nd number: 36/63
81/18 + 36/63 is 71/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
81/18 = 81 × 7/18 × 7 = 567/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
36/63 = 36 × 2/63 × 2 = 72/126 - Add the two like fractions:
567/126 + 72/126 = 567 + 72/126 = 639/126 - 639/126 simplified gives 71/14
- So, 81/18 + 36/63 = 71/14
In mixed form: 51/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/18+72/63 81/36+36/63 81/54+36/63 81/90+36/63