Subtract 25/18 from 70/75
1st number: 70/75, 2nd number: 1 7/18
70/75 - 25/18 is -41/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
70/75 = 70 × 6/75 × 6 = 420/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
25/18 = 25 × 25/18 × 25 = 625/450 - Subtract the two like fractions:
420/450 - 625/450 = 420 - 625/450 = -205/450 - After reducing the fraction, the answer is -41/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/75-50/18 70/75-25/36 70/75-75/18 70/75-25/54 70/75-25/90