Add 72/7 and 10/90
1st number: 10 2/7, 2nd number: 10/90
72/7 + 10/90 is 655/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
72/7 = 72 × 90/7 × 90 = 6480/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
10/90 = 10 × 7/90 × 7 = 70/630 - Add the two like fractions:
6480/630 + 70/630 = 6480 + 70/630 = 6550/630 - 6550/630 simplified gives 655/63
- So, 72/7 + 10/90 = 655/63
In mixed form: 1025/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/7+20/90 72/14+10/90 72/7+30/90 72/21+10/90 72/7+50/90 72/35+10/90 72/7+70/90 72/49+10/90