Add 90/7 and 30/8
1st number: 12 6/7, 2nd number: 3 6/8
90/7 + 30/8 is 465/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
90/7 = 90 × 8/7 × 8 = 720/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
30/8 = 30 × 7/8 × 7 = 210/56 - Add the two like fractions:
720/56 + 210/56 = 720 + 210/56 = 930/56 - 930/56 simplified gives 465/28
- So, 90/7 + 30/8 = 465/28
In mixed form: 1617/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7+60/8 90/14+30/8 90/7+30/16 90/7+90/8 90/21+30/8 90/7+30/24 90/35+30/8 90/7+30/40 90/49+30/8 90/7+30/56