Subtract 42/12 from 12/10
1st number: 1 2/10, 2nd number: 3 6/12
12/10 - 42/12 is -23/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
12/10 = 12 × 6/10 × 6 = 72/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Subtract the two like fractions:
72/60 - 210/60 = 72 - 210/60 = -138/60 - After reducing the fraction, the answer is -23/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/10-42/12 12/10-84/12 12/20-42/12 12/10-42/24 36/10-42/12 12/30-42/12 12/10-42/36 60/10-42/12 12/50-42/12 12/10-42/60 84/10-42/12 12/70-42/12 12/10-42/84