Subtract 30/36 from 1/45
1/45 - 30/36 is -73/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
1/45 = 1 × 4/45 × 4 = 4/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
30/36 = 30 × 5/36 × 5 = 150/180 - Subtract the two like fractions:
4/180 - 150/180 = 4 - 150/180 = -146/180 - After reducing the fraction, the answer is -73/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/45-30/36 1/45-60/36 1/90-30/36 1/45-30/72 3/45-30/36 1/45-90/36 5/45-30/36 7/45-30/36