Add 10/7 and 90/72
1st number: 1 3/7, 2nd number: 1 18/72
10/7 + 90/72 is 75/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
10/7 = 10 × 72/7 × 72 = 720/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504 - Add the two like fractions:
720/504 + 630/504 = 720 + 630/504 = 1350/504 - 1350/504 simplified gives 75/28
- So, 10/7 + 90/72 = 75/28
In mixed form: 219/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/7+90/72 10/14+90/72 30/7+90/72 10/21+90/72 50/7+90/72 10/35+90/72 70/7+90/72 10/49+90/72