Add 45/15 and 45/90
1st number: 3 0/15, 2nd number: 45/90
45/15 + 45/90 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 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 90 × 1 = 90,
45/90 = 45 × 1/90 × 1 = 45/90 - Add the two like fractions:
270/90 + 45/90 = 270 + 45/90 = 315/90 - 315/90 simplified gives 7/2
- So, 45/15 + 45/90 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+45/90 45/30+45/90 45/75+45/90