Subtract 16/4 from 4/90
1st number: 4/90, 2nd number: 4 0/4
4/90 - 16/4 is -178/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
4/90 = 4 × 2/90 × 2 = 8/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
16/4 = 16 × 45/4 × 45 = 720/180 - Subtract the two like fractions:
8/180 - 720/180 = 8 - 720/180 = -712/180 - After reducing the fraction, the answer is -178/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90-16/4 4/90-32/4 4/90-16/8 12/90-16/4 4/90-48/4 4/90-16/12 20/90-16/4 4/90-80/4 4/90-16/20 28/90-16/4 4/90-16/28