Add 42/72 and 25/9
1st number: 42/72, 2nd number: 2 7/9
42/72 + 25/9 is 121/36.
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,
42/72 = 42 × 1/72 × 1 = 42/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
25/9 = 25 × 8/9 × 8 = 200/72 - Add the two like fractions:
42/72 + 200/72 = 42 + 200/72 = 242/72 - 242/72 simplified gives 121/36
- So, 42/72 + 25/9 = 121/36
In mixed form: 313/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72+25/9 42/72+50/9 42/72+25/18 42/72+75/9 42/72+25/27 42/72+25/45 42/72+25/63