Subtract 27/80 from 12/50
12/50 - 27/80 is -39/400.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 50 × 8 = 400,
12/50 = 12 × 8/50 × 8 = 96/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
27/80 = 27 × 5/80 × 5 = 135/400 - Subtract the two like fractions:
96/400 - 135/400 = 96 - 135/400 = -39/400
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/50-27/80 12/50-54/80 36/50-27/80 12/50-81/80 60/50-27/80 84/50-27/80