Add 90/10 and 30/12
1st number: 9 0/10, 2nd number: 2 6/12
90/10 + 30/12 is 23/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
90/10 = 90 × 6/10 × 6 = 540/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
30/12 = 30 × 5/12 × 5 = 150/60 - Add the two like fractions:
540/60 + 150/60 = 540 + 150/60 = 690/60 - 690/60 simplified gives 23/2
- So, 90/10 + 30/12 = 23/2
In mixed form: 111/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10+60/12 90/20+30/12 90/10+30/24 90/10+90/12 90/30+30/12 90/10+30/36 90/50+30/12 90/10+30/60 90/70+30/12 90/10+30/84