Add 63/5 and 72/90
1st number: 12 3/5, 2nd number: 72/90
63/5 + 72/90 is 67/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
63/5 = 63 × 18/5 × 18 = 1134/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
72/90 = 72 × 1/90 × 1 = 72/90 - Add the two like fractions:
1134/90 + 72/90 = 1134 + 72/90 = 1206/90 - 1206/90 simplified gives 67/5
- So, 63/5 + 72/90 = 67/5
In mixed form: 132/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/10+72/90 63/15+72/90 63/25+72/90 63/35+72/90