Add 90/15 and 12/10
1st number: 6 0/15, 2nd number: 1 2/10
90/15 + 12/10 is 36/5.
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,
90/15 = 90 × 2/15 × 2 = 180/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
12/10 = 12 × 3/10 × 3 = 36/30 - Add the two like fractions:
180/30 + 36/30 = 180 + 36/30 = 216/30 - 216/30 simplified gives 36/5
- So, 90/15 + 12/10 = 36/5
In mixed form: 71/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+24/10 90/30+12/10 90/15+12/20 90/15+36/10 90/45+12/10 90/15+12/30 90/15+60/10 90/75+12/10 90/15+12/50 90/15+84/10 90/15+12/70