Add 90/72 and 4/63
1st number: 1 18/72, 2nd number: 4/63
90/72 + 4/63 is 331/252.
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,
4/63 = 4 × 8/63 × 8 = 32/504 - Add the two like fractions:
630/504 + 32/504 = 630 + 32/504 = 662/504 - 662/504 simplified gives 331/252
- So, 90/72 + 4/63 = 331/252
In mixed form: 179/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+8/63 90/72+12/63 90/72+20/63 90/72+28/63