Subtract 84/90 from 4/75
4/75 - 84/90 is -22/25.
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,
4/75 = 4 × 6/75 × 6 = 24/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
84/90 = 84 × 5/90 × 5 = 420/450 - Subtract the two like fractions:
24/450 - 420/450 = 24 - 420/450 = -396/450 - After reducing the fraction, the answer is -22/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/75-84/90 12/75-84/90 20/75-84/90 28/75-84/90