Add 15/90 and 40/75
15/90 + 40/75 is 7/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 75 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
15/90 = 15 × 5/90 × 5 = 75/450 - Likewise, for the 2nd fraction, since 75 × 6 = 450,
40/75 = 40 × 6/75 × 6 = 240/450 - Add the two like fractions:
75/450 + 240/450 = 75 + 240/450 = 315/450 - 315/450 simplified gives 7/10
- So, 15/90 + 40/75 = 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/90+40/75 15/90+80/75 45/90+40/75 75/90+40/75