Subtract 90/84 from 12/75
1st number: 12/75, 2nd number: 1 6/84
12/75 - 90/84 is -319/350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 84 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 75 × 28 = 2100,
12/75 = 12 × 28/75 × 28 = 336/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
90/84 = 90 × 25/84 × 25 = 2250/2100 - Subtract the two like fractions:
336/2100 - 2250/2100 = 336 - 2250/2100 = -1914/2100 - After reducing the fraction, the answer is -319/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/75-90/84 36/75-90/84 60/75-90/84 84/75-90/84