Subtract 45/4 from 90/50
1st number: 1 40/50, 2nd number: 11 1/4
90/50 - 45/4 is -189/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 4 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 50 × 2 = 100,
90/50 = 90 × 2/50 × 2 = 180/100 - Likewise, for the 2nd fraction, since 4 × 25 = 100,
45/4 = 45 × 25/4 × 25 = 1125/100 - Subtract the two like fractions:
180/100 - 1125/100 = 180 - 1125/100 = -945/100 - After reducing the fraction, the answer is -189/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/50-90/4 90/50-45/8 90/50-45/12 90/50-45/20 90/50-45/28