Subtract 12/40 from 5/75
5/75 - 12/40 is -7/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 40 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 75 × 8 = 600,
5/75 = 5 × 8/75 × 8 = 40/600 - Likewise, for the 2nd fraction, since 40 × 15 = 600,
12/40 = 12 × 15/40 × 15 = 180/600 - Subtract the two like fractions:
40/600 - 180/600 = 40 - 180/600 = -140/600 - After reducing the fraction, the answer is -7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/75-12/40 5/75-24/40 5/75-12/80 15/75-12/40 5/75-36/40 25/75-12/40 5/75-60/40 35/75-12/40 5/75-84/40