Add 40/90 and 6/15
40/90 + 6/15 is 38/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
40/90 = 40 × 1/90 × 1 = 40/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
6/15 = 6 × 6/15 × 6 = 36/90 - Add the two like fractions:
40/90 + 36/90 = 40 + 36/90 = 76/90 - 76/90 simplified gives 38/45
- So, 40/90 + 6/15 = 38/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+6/15 40/90+12/15 40/90+6/30 40/90+18/15 40/90+6/45 40/90+30/15 40/90+6/75 40/90+42/15