Subtract 75/45 from 49/40
1st number: 1 9/40, 2nd number: 1 30/45
49/40 - 75/45 is -53/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 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 45 × 8 = 360,
75/45 = 75 × 8/45 × 8 = 600/360 - Subtract the two like fractions:
441/360 - 600/360 = 441 - 600/360 = -159/360 - After reducing the fraction, the answer is -53/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/40-75/45 49/80-75/45 49/40-75/90