Subtract 1/70 from 9/42
9/42 - 1/70 is 1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
9/42 = 9 × 5/42 × 5 = 45/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
1/70 = 1 × 3/70 × 3 = 3/210 - Subtract the two like fractions:
45/210 - 3/210 = 45 - 3/210 = 42/210 - After reducing the fraction, the answer is 1/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42-1/70 9/42-2/70 9/84-1/70 27/42-1/70 9/42-3/70 45/42-1/70 9/42-5/70 63/42-1/70 9/42-7/70