Add 72/9 and 42/72
1st number: 8 0/9, 2nd number: 42/72
72/9 + 42/72 is 103/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
72/9 = 72 × 8/9 × 8 = 576/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Add the two like fractions:
576/72 + 42/72 = 576 + 42/72 = 618/72 - 618/72 simplified gives 103/12
- So, 72/9 + 42/72 = 103/12
In mixed form: 87/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/9+84/72 72/18+42/72 72/27+42/72 72/45+42/72 72/63+42/72