Add 45/15 and 90/18
1st number: 3 0/15, 2nd number: 5 0/18
45/15 + 90/18 is 8/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
45/15 = 45 × 6/15 × 6 = 270/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
90/18 = 90 × 5/18 × 5 = 450/90 - Add the two like fractions:
270/90 + 450/90 = 270 + 450/90 = 720/90 - 720/90 simplified gives 8/1
- So, 45/15 + 90/18 = 8/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+90/18 45/30+90/18 45/15+90/36 45/15+90/54 45/75+90/18