Add 4/72 and 42/9
1st number: 4/72, 2nd number: 4 6/9
4/72 + 42/9 is 85/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
4/72 = 4 × 1/72 × 1 = 4/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
42/9 = 42 × 8/9 × 8 = 336/72 - Add the two like fractions:
4/72 + 336/72 = 4 + 336/72 = 340/72 - 340/72 simplified gives 85/18
- So, 4/72 + 42/9 = 85/18
In mixed form: 413/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/72+42/9 4/72+84/9 4/72+42/18 12/72+42/9 4/72+42/27 20/72+42/9 4/72+42/45 28/72+42/9 4/72+42/63