Add 9/84 and 81/10
1st number: 9/84, 2nd number: 8 1/10
9/84 + 81/10 is 1149/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
9/84 = 9 × 5/84 × 5 = 45/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
81/10 = 81 × 42/10 × 42 = 3402/420 - Add the two like fractions:
45/420 + 3402/420 = 45 + 3402/420 = 3447/420 - 3447/420 simplified gives 1149/140
- So, 9/84 + 81/10 = 1149/140
In mixed form: 829/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/84+81/10 9/84+81/20 27/84+81/10 9/84+81/30 45/84+81/10 9/84+81/50 63/84+81/10 9/84+81/70