Add 10/90 and 90/7
1st number: 10/90, 2nd number: 12 6/7
10/90 + 90/7 is 817/63.
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,
10/90 = 10 × 7/90 × 7 = 70/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
90/7 = 90 × 90/7 × 90 = 8100/630 - Add the two like fractions:
70/630 + 8100/630 = 70 + 8100/630 = 8170/630 - 8170/630 simplified gives 817/63
- So, 10/90 + 90/7 = 817/63
In mixed form: 1261/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/90+90/7 10/90+90/14 30/90+90/7 10/90+90/21 50/90+90/7 10/90+90/35 70/90+90/7 10/90+90/49