Subtract 10/8 from 42/10
1st number: 4 2/10, 2nd number: 1 2/8
42/10 - 10/8 is 59/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
42/10 = 42 × 4/10 × 4 = 168/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
10/8 = 10 × 5/8 × 5 = 50/40 - Subtract the two like fractions:
168/40 - 50/40 = 168 - 50/40 = 118/40 - After reducing the fraction, the answer is 59/20
- In mixed form: 219/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10-10/8 42/10-20/8 42/20-10/8 42/10-10/16 42/10-30/8 42/30-10/8 42/10-10/24 42/10-50/8 42/50-10/8 42/10-10/40 42/10-70/8 42/70-10/8 42/10-10/56