Add 81/7 and 24/90
1st number: 11 4/7, 2nd number: 24/90
81/7 + 24/90 is 1243/105.
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,
81/7 = 81 × 90/7 × 90 = 7290/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
24/90 = 24 × 7/90 × 7 = 168/630 - Add the two like fractions:
7290/630 + 168/630 = 7290 + 168/630 = 7458/630 - 7458/630 simplified gives 1243/105
- So, 81/7 + 24/90 = 1243/105
In mixed form: 1188/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/7+48/90 81/14+24/90 81/7+72/90 81/21+24/90 81/35+24/90 81/49+24/90