Add 84/64 and 21/10
1st number: 1 20/64, 2nd number: 2 1/10
84/64 + 21/10 is 273/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 10 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 64 × 5 = 320,
84/64 = 84 × 5/64 × 5 = 420/320 - Likewise, for the 2nd fraction, since 10 × 32 = 320,
21/10 = 21 × 32/10 × 32 = 672/320 - Add the two like fractions:
420/320 + 672/320 = 420 + 672/320 = 1092/320 - 1092/320 simplified gives 273/80
- So, 84/64 + 21/10 = 273/80
In mixed form: 333/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/64+42/10 84/64+21/20 84/64+63/10 84/64+21/30 84/64+21/50 84/64+21/70