Add 90/10 and 21/27
1st number: 9 0/10, 2nd number: 21/27
90/10 + 21/27 is 88/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 10 × 27 = 270,
90/10 = 90 × 27/10 × 27 = 2430/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
21/27 = 21 × 10/27 × 10 = 210/270 - Add the two like fractions:
2430/270 + 210/270 = 2430 + 210/270 = 2640/270 - 2640/270 simplified gives 88/9
- So, 90/10 + 21/27 = 88/9
In mixed form: 97/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10+42/27 90/20+21/27 90/10+21/54 90/10+63/27 90/30+21/27 90/10+21/81 90/50+21/27 90/70+21/27