Subtract 90/24 from 12/4
1st number: 3 0/4, 2nd number: 3 18/24
12/4 - 90/24 is -3/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 4 × 6 = 24,
12/4 = 12 × 6/4 × 6 = 72/24 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
90/24 = 90 × 1/24 × 1 = 90/24 - Subtract the two like fractions:
72/24 - 90/24 = 72 - 90/24 = -18/24 - After reducing the fraction, the answer is -3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/4-90/24 12/8-90/24 12/4-90/48 36/4-90/24 12/4-90/72 60/4-90/24 12/20-90/24 84/4-90/24 12/28-90/24