Subtract 12/40 from 1/49
1/49 - 12/40 is -137/490.
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,
1/49 = 1 × 40/49 × 40 = 40/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
12/40 = 12 × 49/40 × 49 = 588/1960 - Subtract the two like fractions:
40/1960 - 588/1960 = 40 - 588/1960 = -548/1960 - After reducing the fraction, the answer is -137/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/49-12/40 1/49-24/40 1/98-12/40 1/49-12/80 3/49-12/40 1/49-36/40 5/49-12/40 1/49-60/40 7/49-12/40 1/49-84/40