Subtract 64/90 from 49/40
1st number: 1 9/40, 2nd number: 64/90
49/40 - 64/90 is 37/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
49/40 = 49 × 9/40 × 9 = 441/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
64/90 = 64 × 4/90 × 4 = 256/360 - Subtract the two like fractions:
441/360 - 256/360 = 441 - 256/360 = 185/360 - After reducing the fraction, the answer is 37/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/40-64/90 49/80-64/90