Subtract 30/70 from 20/32
20/32 - 30/70 is 11/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 70 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 32 × 35 = 1120,
20/32 = 20 × 35/32 × 35 = 700/1120 - Likewise, for the 2nd fraction, since 70 × 16 = 1120,
30/70 = 30 × 16/70 × 16 = 480/1120 - Subtract the two like fractions:
700/1120 - 480/1120 = 700 - 480/1120 = 220/1120 - After reducing the fraction, the answer is 11/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/32-30/70 20/32-60/70 20/64-30/70 60/32-30/70 20/32-90/70 20/96-30/70