Add 12/15 and 90/10
1st number: 12/15, 2nd number: 9 0/10
12/15 + 90/10 is 49/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
12/15 = 12 × 2/15 × 2 = 24/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
90/10 = 90 × 3/10 × 3 = 270/30 - Add the two like fractions:
24/30 + 270/30 = 24 + 270/30 = 294/30 - 294/30 simplified gives 49/5
- So, 12/15 + 90/10 = 49/5
In mixed form: 94/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+90/10 12/30+90/10 12/15+90/20 36/15+90/10 12/45+90/10 12/15+90/30 60/15+90/10 12/75+90/10 12/15+90/50 84/15+90/10 12/15+90/70