Add 45/72 and 9/56
45/72 + 9/56 is 11/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
45/72 = 45 × 7/72 × 7 = 315/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
9/56 = 9 × 9/56 × 9 = 81/504 - Add the two like fractions:
315/504 + 81/504 = 315 + 81/504 = 396/504 - 396/504 simplified gives 11/14
- So, 45/72 + 9/56 = 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+9/56 45/72+18/56 45/72+27/56 45/72+45/56 45/72+63/56