Subtract 42/64 from 20/10
1st number: 2 0/10, 2nd number: 42/64
20/10 - 42/64 is 43/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 10 × 32 = 320,
20/10 = 20 × 32/10 × 32 = 640/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
42/64 = 42 × 5/64 × 5 = 210/320 - Subtract the two like fractions:
640/320 - 210/320 = 640 - 210/320 = 430/320 - After reducing the fraction, the answer is 43/32
- In mixed form: 111/32
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10-42/64 20/10-84/64 60/10-42/64 20/30-42/64 20/50-42/64 20/70-42/64