Subtract 10/7 from 18/70
1st number: 18/70, 2nd number: 1 3/7
18/70 - 10/7 is -41/35.
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,
18/70 = 18 × 1/70 × 1 = 18/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
10/7 = 10 × 10/7 × 10 = 100/70 - Subtract the two like fractions:
18/70 - 100/70 = 18 - 100/70 = -82/70 - After reducing the fraction, the answer is -41/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/70-10/7 18/70-20/7 18/70-10/14 54/70-10/7 18/70-30/7 18/70-10/21 90/70-10/7 18/70-50/7 18/70-10/35 18/70-70/7 18/70-10/49