Subtract 4/6 from 40/70
40/70 - 4/6 is -2/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
40/70 = 40 × 3/70 × 3 = 120/210 - Likewise, for the 2nd fraction, since 6 × 35 = 210,
4/6 = 4 × 35/6 × 35 = 140/210 - Subtract the two like fractions:
120/210 - 140/210 = 120 - 140/210 = -20/210 - After reducing the fraction, the answer is -2/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70-4/6 40/70-8/6 40/70-4/12 40/70-12/6 40/70-4/18 40/70-20/6 40/70-4/30 40/70-28/6 40/70-4/42