Subtract 5/35 from 12/42
12/42 - 5/35 is 1/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 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 35 × 6 = 210,
5/35 = 5 × 6/35 × 6 = 30/210 - Subtract the two like fractions:
60/210 - 30/210 = 60 - 30/210 = 30/210 - After reducing the fraction, the answer is 1/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42-5/35 12/42-10/35 12/84-5/35 12/42-5/70 36/42-5/35 12/42-15/35 60/42-5/35 12/42-25/35 84/42-5/35