Subtract 30/45 from 4/30
4/30 - 30/45 is -8/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
4/30 = 4 × 3/30 × 3 = 12/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
30/45 = 30 × 2/45 × 2 = 60/90 - Subtract the two like fractions:
12/90 - 60/90 = 12 - 60/90 = -48/90 - After reducing the fraction, the answer is -8/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30-30/45 4/30-60/45 4/60-30/45 4/30-30/90 12/30-30/45 4/30-90/45 4/90-30/45 20/30-30/45 28/30-30/45