Add 15/4 and 80/72
1st number: 3 3/4, 2nd number: 1 8/72
15/4 + 80/72 is 175/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
15/4 = 15 × 18/4 × 18 = 270/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
80/72 = 80 × 1/72 × 1 = 80/72 - Add the two like fractions:
270/72 + 80/72 = 270 + 80/72 = 350/72 - 350/72 simplified gives 175/36
- So, 15/4 + 80/72 = 175/36
In mixed form: 431/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4+80/72 15/8+80/72 45/4+80/72 15/12+80/72 75/4+80/72 15/20+80/72 15/28+80/72