Add 18/30 and 48/90
18/30 + 48/90 is 17/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
18/30 = 18 × 3/30 × 3 = 54/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
48/90 = 48 × 1/90 × 1 = 48/90 - Add the two like fractions:
54/90 + 48/90 = 54 + 48/90 = 102/90 - 102/90 simplified gives 17/15
- So, 18/30 + 48/90 = 17/15
In mixed form: 12/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30+48/90 18/30+96/90 18/60+48/90 54/30+48/90 18/90+48/90 90/30+48/90