Subtract 30/8 from 90/4
1st number: 22 2/4, 2nd number: 3 6/8
90/4 - 30/8 is 75/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
90/4 = 90 × 2/4 × 2 = 180/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
30/8 = 30 × 1/8 × 1 = 30/8 - Subtract the two like fractions:
180/8 - 30/8 = 180 - 30/8 = 150/8 - After reducing the fraction, the answer is 75/4
- In mixed form: 183/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4-60/8 90/8-30/8 90/4-30/16 90/4-90/8 90/12-30/8 90/4-30/24 90/20-30/8 90/4-30/40 90/28-30/8 90/4-30/56