Subtract 40/50 from 12/49
12/49 - 40/50 is -136/245.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 50 is 2450
Next, find the equivalent fraction of both fractional numbers with denominator 2450 - For the 1st fraction, since 49 × 50 = 2450,
12/49 = 12 × 50/49 × 50 = 600/2450 - Likewise, for the 2nd fraction, since 50 × 49 = 2450,
40/50 = 40 × 49/50 × 49 = 1960/2450 - Subtract the two like fractions:
600/2450 - 1960/2450 = 600 - 1960/2450 = -1360/2450 - After reducing the fraction, the answer is -136/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/49-40/50 12/49-80/50 12/98-40/50 36/49-40/50 60/49-40/50 84/49-40/50