Add 30/8 and 90/7
1st number: 3 6/8, 2nd number: 12 6/7
30/8 + 90/7 is 465/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
30/8 = 30 × 7/8 × 7 = 210/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
90/7 = 90 × 8/7 × 8 = 720/56 - Add the two like fractions:
210/56 + 720/56 = 210 + 720/56 = 930/56 - 930/56 simplified gives 465/28
- So, 30/8 + 90/7 = 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: 60/8+90/7 30/16+90/7 30/8+90/14 90/8+90/7 30/24+90/7 30/8+90/21 30/40+90/7 30/8+90/35 30/56+90/7 30/8+90/49