Add 75/7 and 15/90
1st number: 10 5/7, 2nd number: 15/90
75/7 + 15/90 is 457/42.
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,
75/7 = 75 × 90/7 × 90 = 6750/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
15/90 = 15 × 7/90 × 7 = 105/630 - Add the two like fractions:
6750/630 + 105/630 = 6750 + 105/630 = 6855/630 - 6855/630 simplified gives 457/42
- So, 75/7 + 15/90 = 457/42
In mixed form: 1037/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/7+30/90 75/14+15/90 75/7+45/90 75/21+15/90 75/7+75/90 75/35+15/90 75/49+15/90