Add 8/90 and 12/7
1st number: 8/90, 2nd number: 1 5/7
8/90 + 12/7 is 568/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
8/90 = 8 × 7/90 × 7 = 56/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
12/7 = 12 × 90/7 × 90 = 1080/630 - Add the two like fractions:
56/630 + 1080/630 = 56 + 1080/630 = 1136/630 - 1136/630 simplified gives 568/315
- So, 8/90 + 12/7 = 568/315
In mixed form: 1253/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/90+12/7 8/90+24/7 8/90+12/14 24/90+12/7 8/90+36/7 8/90+12/21 40/90+12/7 8/90+60/7 8/90+12/35 56/90+12/7 8/90+84/7 8/90+12/49