Subtract 90/15 from 75/4
1st number: 18 3/4, 2nd number: 6 0/15
75/4 - 90/15 is 51/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
75/4 = 75 × 15/4 × 15 = 1125/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
90/15 = 90 × 4/15 × 4 = 360/60 - Subtract the two like fractions:
1125/60 - 360/60 = 1125 - 360/60 = 765/60 - After reducing the fraction, the answer is 51/4
- In mixed form: 123/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/8-90/15 75/4-90/30 75/12-90/15 75/4-90/45 75/20-90/15 75/4-90/75 75/28-90/15