Subtract 30/4 from 90/75
1st number: 1 15/75, 2nd number: 7 2/4
90/75 - 30/4 is -63/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 4 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
90/75 = 90 × 4/75 × 4 = 360/300 - Likewise, for the 2nd fraction, since 4 × 75 = 300,
30/4 = 30 × 75/4 × 75 = 2250/300 - Subtract the two like fractions:
360/300 - 2250/300 = 360 - 2250/300 = -1890/300 - After reducing the fraction, the answer is -63/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/75-60/4 90/75-30/8 90/75-90/4 90/75-30/12 90/75-30/20 90/75-30/28