Add 54/72 and 90/48
1st number: 54/72, 2nd number: 1 42/48
54/72 + 90/48 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 48 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 72 × 2 = 144,
54/72 = 54 × 2/72 × 2 = 108/144 - Likewise, for the 2nd fraction, since 48 × 3 = 144,
90/48 = 90 × 3/48 × 3 = 270/144 - Add the two like fractions:
108/144 + 270/144 = 108 + 270/144 = 378/144 - 378/144 simplified gives 21/8
- So, 54/72 + 90/48 = 21/8
In mixed form: 25/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/72+90/96