Subtract 45/40 from 4/49
1st number: 4/49, 2nd number: 1 5/40
4/49 - 45/40 is -409/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 49 × 40 = 1960,
4/49 = 4 × 40/49 × 40 = 160/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
45/40 = 45 × 49/40 × 49 = 2205/1960 - Subtract the two like fractions:
160/1960 - 2205/1960 = 160 - 2205/1960 = -2045/1960 - After reducing the fraction, the answer is -409/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/49-45/40 4/49-90/40 4/98-45/40 4/49-45/80 12/49-45/40 20/49-45/40 28/49-45/40