Subtract 90/27 from 9/30
1st number: 9/30, 2nd number: 3 9/27
9/30 - 90/27 is -91/30.
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,
9/30 = 9 × 9/30 × 9 = 81/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
90/27 = 90 × 10/27 × 10 = 900/270 - Subtract the two like fractions:
81/270 - 900/270 = 81 - 900/270 = -819/270 - After reducing the fraction, the answer is -91/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/30-90/27 9/60-90/27 9/30-90/54 27/30-90/27 9/90-90/27 9/30-90/81 45/30-90/27 63/30-90/27