Add 45/63 and 54/72
45/63 + 54/72 is 41/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
45/63 = 45 × 8/63 × 8 = 360/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
54/72 = 54 × 7/72 × 7 = 378/504 - Add the two like fractions:
360/504 + 378/504 = 360 + 378/504 = 738/504 - 738/504 simplified gives 41/28
- So, 45/63 + 54/72 = 41/28
In mixed form: 113/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/63+54/72