Subtract 9/30 from 2/45
2/45 - 9/30 is -23/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
2/45 = 2 × 2/45 × 2 = 4/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
9/30 = 9 × 3/30 × 3 = 27/90 - Subtract the two like fractions:
4/90 - 27/90 = 4 - 27/90 = -23/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/45-9/30 2/45-18/30 2/90-9/30 2/45-9/60 6/45-9/30 2/45-27/30 2/45-9/90 10/45-9/30 2/45-45/30 14/45-9/30 2/45-63/30