Subtract 1/7 from 42/70
42/70 - 1/7 is 16/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
42/70 = 42 × 1/70 × 1 = 42/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
1/7 = 1 × 10/7 × 10 = 10/70 - Subtract the two like fractions:
42/70 - 10/70 = 42 - 10/70 = 32/70 - After reducing the fraction, the answer is 16/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/70-1/7 42/70-2/7 42/70-1/14 42/70-3/7 42/70-1/21 42/70-5/7 42/70-1/35 42/70-1/49