Add 81/90 and 64/10
1st number: 81/90, 2nd number: 6 4/10
81/90 + 64/10 is 73/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
64/10 = 64 × 9/10 × 9 = 576/90 - Add the two like fractions:
81/90 + 576/90 = 81 + 576/90 = 657/90 - 657/90 simplified gives 73/10
- So, 81/90 + 64/10 = 73/10
In mixed form: 73/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/90+64/20 81/90+64/30 81/90+64/50 81/90+64/70