Add 15/75 and 9/90
15/75 + 9/90 is 3/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
15/75 = 15 × 6/75 × 6 = 90/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
9/90 = 9 × 5/90 × 5 = 45/450 - Add the two like fractions:
90/450 + 45/450 = 90 + 45/450 = 135/450 - 135/450 simplified gives 3/10
- So, 15/75 + 9/90 = 3/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/75+9/90 15/75+18/90 45/75+9/90 15/75+27/90 15/75+45/90 15/75+63/90