Add 72/63 and 12/80
1st number: 1 9/63, 2nd number: 12/80
72/63 + 12/80 is 181/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 80 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 63 × 80 = 5040,
72/63 = 72 × 80/63 × 80 = 5760/5040 - Likewise, for the 2nd fraction, since 80 × 63 = 5040,
12/80 = 12 × 63/80 × 63 = 756/5040 - Add the two like fractions:
5760/5040 + 756/5040 = 5760 + 756/5040 = 6516/5040 - 6516/5040 simplified gives 181/140
- So, 72/63 + 12/80 = 181/140
In mixed form: 141/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/63+24/80 72/63+36/80 72/63+60/80 72/63+84/80