Subtract 45/36 from 36/42
1st number: 36/42, 2nd number: 1 9/36
36/42 - 45/36 is -11/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 42 × 6 = 252,
36/42 = 36 × 6/42 × 6 = 216/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
45/36 = 45 × 7/36 × 7 = 315/252 - Subtract the two like fractions:
216/252 - 315/252 = 216 - 315/252 = -99/252 - After reducing the fraction, the answer is -11/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/42-45/36 36/42-90/36 36/84-45/36 36/42-45/72