Add 9/60 and 90/63
1st number: 9/60, 2nd number: 1 27/63
9/60 + 90/63 is 221/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 60 × 21 = 1260,
9/60 = 9 × 21/60 × 21 = 189/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
90/63 = 90 × 20/63 × 20 = 1800/1260 - Add the two like fractions:
189/1260 + 1800/1260 = 189 + 1800/1260 = 1989/1260 - 1989/1260 simplified gives 221/140
- So, 9/60 + 90/63 = 221/140
In mixed form: 181/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/60+90/63 27/60+90/63 45/60+90/63 63/60+90/63