Subtract 9/36 from 42/10
1st number: 4 2/10, 2nd number: 9/36
42/10 - 9/36 is 79/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 10 × 18 = 180,
42/10 = 42 × 18/10 × 18 = 756/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
9/36 = 9 × 5/36 × 5 = 45/180 - Subtract the two like fractions:
756/180 - 45/180 = 756 - 45/180 = 711/180 - After reducing the fraction, the answer is 79/20
- In mixed form: 319/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10-9/36 42/10-18/36 42/20-9/36 42/10-9/72 42/10-27/36 42/30-9/36 42/10-45/36 42/50-9/36 42/10-63/36 42/70-9/36