Subtract 90/64 from 10/40
1st number: 10/40, 2nd number: 1 26/64
10/40 - 90/64 is -37/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 40 × 8 = 320,
10/40 = 10 × 8/40 × 8 = 80/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
90/64 = 90 × 5/64 × 5 = 450/320 - Subtract the two like fractions:
80/320 - 450/320 = 80 - 450/320 = -370/320 - After reducing the fraction, the answer is -37/32
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40-90/64 10/80-90/64 30/40-90/64 50/40-90/64 70/40-90/64