Subtract 54/27 from 45/30
1st number: 1 15/30, 2nd number: 2 0/27
45/30 - 54/27 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
45/30 = 45 × 9/30 × 9 = 405/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
54/27 = 54 × 10/27 × 10 = 540/270 - Subtract the two like fractions:
405/270 - 540/270 = 405 - 540/270 = -135/270 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-54/27 45/60-54/27 45/90-54/27 45/30-54/81