Subtract 90/16 from 12/4
1st number: 3 0/4, 2nd number: 5 10/16
12/4 - 90/16 is -21/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 4 × 4 = 16,
12/4 = 12 × 4/4 × 4 = 48/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
90/16 = 90 × 1/16 × 1 = 90/16 - Subtract the two like fractions:
48/16 - 90/16 = 48 - 90/16 = -42/16 - After reducing the fraction, the answer is -21/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/4-90/16 12/8-90/16 12/4-90/32 36/4-90/16 12/4-90/48 60/4-90/16 12/20-90/16 12/4-90/80 84/4-90/16 12/28-90/16