Subtract 10/32 from 7/90
7/90 - 10/32 is -169/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 32 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 90 × 16 = 1440,
7/90 = 7 × 16/90 × 16 = 112/1440 - Likewise, for the 2nd fraction, since 32 × 45 = 1440,
10/32 = 10 × 45/32 × 45 = 450/1440 - Subtract the two like fractions:
112/1440 - 450/1440 = 112 - 450/1440 = -338/1440 - After reducing the fraction, the answer is -169/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/90-10/32 7/90-20/32 7/90-10/64 21/90-10/32 7/90-30/32 7/90-10/96 35/90-10/32 7/90-50/32 49/90-10/32 7/90-70/32