Subtract 5/8 from 20/70
20/70 - 5/8 is -19/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 8 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
20/70 = 20 × 4/70 × 4 = 80/280 - Likewise, for the 2nd fraction, since 8 × 35 = 280,
5/8 = 5 × 35/8 × 35 = 175/280 - Subtract the two like fractions:
80/280 - 175/280 = 80 - 175/280 = -95/280 - After reducing the fraction, the answer is -19/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70-5/8 20/70-10/8 20/70-5/16 60/70-5/8 20/70-15/8 20/70-5/24 20/70-25/8 20/70-5/40 20/70-35/8 20/70-5/56