Subtract 10/90 from 70/75
70/75 - 10/90 is 37/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 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 90 × 5 = 450,
10/90 = 10 × 5/90 × 5 = 50/450 - Subtract the two like fractions:
420/450 - 50/450 = 420 - 50/450 = 370/450 - After reducing the fraction, the answer is 37/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/75-20/90 70/75-30/90 70/75-50/90 70/75-70/90