Add 90/72 and 9/56
1st number: 1 18/72, 2nd number: 9/56
90/72 + 9/56 is 79/56.
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,
90/72 = 90 × 7/72 × 7 = 630/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
9/56 = 9 × 9/56 × 9 = 81/504 - Add the two like fractions:
630/504 + 81/504 = 630 + 81/504 = 711/504 - 711/504 simplified gives 79/56
- So, 90/72 + 9/56 = 79/56
In mixed form: 123/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+18/56 90/72+27/56 90/72+45/56 90/72+63/56