Add 90/72 and 50/63
1st number: 1 18/72, 2nd number: 50/63
90/72 + 50/63 is 515/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
50/63 = 50 × 8/63 × 8 = 400/504 - Add the two like fractions:
630/504 + 400/504 = 630 + 400/504 = 1030/504 - 1030/504 simplified gives 515/252
- So, 90/72 + 50/63 = 515/252
In mixed form: 211/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: