Add 54/72 and 70/63
1st number: 54/72, 2nd number: 1 7/63
54/72 + 70/63 is 67/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
54/72 = 54 × 7/72 × 7 = 378/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
70/63 = 70 × 8/63 × 8 = 560/504 - Add the two like fractions:
378/504 + 560/504 = 378 + 560/504 = 938/504 - 938/504 simplified gives 67/36
- So, 54/72 + 70/63 = 67/36
In mixed form: 131/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: