Subtract 14/10 from 12/42
1st number: 12/42, 2nd number: 1 4/10
12/42 - 14/10 is -39/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
12/42 = 12 × 5/42 × 5 = 60/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
14/10 = 14 × 21/10 × 21 = 294/210 - Subtract the two like fractions:
60/210 - 294/210 = 60 - 294/210 = -234/210 - After reducing the fraction, the answer is -39/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42-14/10 12/42-28/10 12/84-14/10 12/42-14/20 36/42-14/10 12/42-42/10 12/42-14/30 60/42-14/10 12/42-70/10 12/42-14/50 84/42-14/10 12/42-98/10 12/42-14/70