Add 15/18 and 12/72
15/18 + 12/72 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
15/18 = 15 × 4/18 × 4 = 60/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
12/72 = 12 × 1/72 × 1 = 12/72 - Add the two like fractions:
60/72 + 12/72 = 60 + 12/72 = 72/72 - 72/72 simplified gives 1/1
- So, 15/18 + 12/72 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18+12/72 15/18+24/72 15/36+12/72 45/18+12/72 15/18+36/72 15/54+12/72 75/18+12/72 15/18+60/72 15/90+12/72 15/18+84/72