Add 90/3 and 63/7
1st number: 30 0/3, 2nd number: 9 0/7
90/3 + 63/7 is 39/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
90/3 = 90 × 7/3 × 7 = 630/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
63/7 = 63 × 3/7 × 3 = 189/21 - Add the two like fractions:
630/21 + 189/21 = 630 + 189/21 = 819/21 - 819/21 simplified gives 39/1
- So, 90/3 + 63/7 = 39/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/6+63/7 90/3+63/14 90/9+63/7 90/3+63/21 90/15+63/7 90/3+63/35 90/21+63/7 90/3+63/49