Subtract 90/42 from 12/25
1st number: 12/25, 2nd number: 2 6/42
12/25 - 90/42 is -291/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 25 × 42 = 1050,
12/25 = 12 × 42/25 × 42 = 504/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
90/42 = 90 × 25/42 × 25 = 2250/1050 - Subtract the two like fractions:
504/1050 - 2250/1050 = 504 - 2250/1050 = -1746/1050 - After reducing the fraction, the answer is -291/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/25-90/42 12/50-90/42 12/25-90/84 36/25-90/42 12/75-90/42 60/25-90/42 84/25-90/42