Add 12/90 and 3/5
12/90 + 3/5 is 11/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
12/90 = 12 × 1/90 × 1 = 12/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
3/5 = 3 × 18/5 × 18 = 54/90 - Add the two like fractions:
12/90 + 54/90 = 12 + 54/90 = 66/90 - 66/90 simplified gives 11/15
- So, 12/90 + 3/5 = 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90+3/5 12/90+6/5 12/90+3/10 36/90+3/5 12/90+9/5 12/90+3/15 60/90+3/5 12/90+15/5 12/90+3/25 84/90+3/5 12/90+21/5 12/90+3/35