Add 18/72 and 45/84
18/72 + 45/84 is 11/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 84 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
18/72 = 18 × 7/72 × 7 = 126/504 - Likewise, for the 2nd fraction, since 84 × 6 = 504,
45/84 = 45 × 6/84 × 6 = 270/504 - Add the two like fractions:
126/504 + 270/504 = 126 + 270/504 = 396/504 - 396/504 simplified gives 11/14
- So, 18/72 + 45/84 = 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/72+45/84 18/72+90/84 54/72+45/84 90/72+45/84