Subtract 27/45 from 7/4
1st number: 1 3/4, 2nd number: 27/45
7/4 - 27/45 is 23/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
7/4 = 7 × 45/4 × 45 = 315/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
27/45 = 27 × 4/45 × 4 = 108/180 - Subtract the two like fractions:
315/180 - 108/180 = 315 - 108/180 = 207/180 - After reducing the fraction, the answer is 23/20
- In mixed form: 13/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/4-27/45 7/4-54/45 7/8-27/45 7/4-27/90 21/4-27/45 7/4-81/45 7/12-27/45 35/4-27/45 7/20-27/45 49/4-27/45 7/28-27/45