Add 18/12 and 40/63
1st number: 1 6/12, 2nd number: 40/63
18/12 + 40/63 is 269/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
18/12 = 18 × 21/12 × 21 = 378/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
40/63 = 40 × 4/63 × 4 = 160/252 - Add the two like fractions:
378/252 + 160/252 = 378 + 160/252 = 538/252 - 538/252 simplified gives 269/126
- So, 18/12 + 40/63 = 269/126
In mixed form: 217/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+40/63 18/12+80/63 18/24+40/63 54/12+40/63 18/36+40/63 90/12+40/63 18/60+40/63 18/84+40/63