Subtract 90/70 from 27/32
1st number: 27/32, 2nd number: 1 20/70
27/32 - 90/70 is -99/224.
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,
27/32 = 27 × 35/32 × 35 = 945/1120 - Likewise, for the 2nd fraction, since 70 × 16 = 1120,
90/70 = 90 × 16/70 × 16 = 1440/1120 - Subtract the two like fractions:
945/1120 - 1440/1120 = 945 - 1440/1120 = -495/1120 - After reducing the fraction, the answer is -99/224
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/32-90/70 27/64-90/70 81/32-90/70 27/96-90/70