Add 7/54 and 90/72
1st number: 7/54, 2nd number: 1 18/72
7/54 + 90/72 is 149/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 72 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
7/54 = 7 × 4/54 × 4 = 28/216 - Likewise, for the 2nd fraction, since 72 × 3 = 216,
90/72 = 90 × 3/72 × 3 = 270/216 - Add the two like fractions:
28/216 + 270/216 = 28 + 270/216 = 298/216 - 298/216 simplified gives 149/108
- So, 7/54 + 90/72 = 149/108
In mixed form: 141/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/54+90/72 21/54+90/72 35/54+90/72 49/54+90/72