Subtract 90/84 from 40/25
1st number: 1 15/25, 2nd number: 1 6/84
40/25 - 90/84 is 37/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 84 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 25 × 84 = 2100,
40/25 = 40 × 84/25 × 84 = 3360/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
90/84 = 90 × 25/84 × 25 = 2250/2100 - Subtract the two like fractions:
3360/2100 - 2250/2100 = 3360 - 2250/2100 = 1110/2100 - After reducing the fraction, the answer is 37/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/25-90/84 40/50-90/84 40/75-90/84