Subtract 27/42 from 4/70
4/70 - 27/42 is -41/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
4/70 = 4 × 3/70 × 3 = 12/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
27/42 = 27 × 5/42 × 5 = 135/210 - Subtract the two like fractions:
12/210 - 135/210 = 12 - 135/210 = -123/210 - After reducing the fraction, the answer is -41/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/70-27/42 4/70-54/42 4/70-27/84 12/70-27/42 4/70-81/42 20/70-27/42 28/70-27/42