Add 21/64 and 12/10
1st number: 21/64, 2nd number: 1 2/10
21/64 + 12/10 is 489/320.
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,
21/64 = 21 × 5/64 × 5 = 105/320 - Likewise, for the 2nd fraction, since 10 × 32 = 320,
12/10 = 12 × 32/10 × 32 = 384/320 - Add the two like fractions:
105/320 + 384/320 = 105 + 384/320 = 489/320 - So, 21/64 + 12/10 = 489/320
In mixed form: 1169/320
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/64+12/10 21/64+24/10 21/64+12/20 63/64+12/10 21/64+36/10 21/64+12/30 21/64+60/10 21/64+12/50 21/64+84/10 21/64+12/70