Subtract 90/45 from 3/30
1st number: 3/30, 2nd number: 2 0/45
3/30 - 90/45 is -19/10.
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,
3/30 = 3 × 3/30 × 3 = 9/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
90/45 = 90 × 2/45 × 2 = 180/90 - Subtract the two like fractions:
9/90 - 180/90 = 9 - 180/90 = -171/90 - After reducing the fraction, the answer is -19/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/30-90/45 3/60-90/45 9/30-90/45 3/90-90/45 15/30-90/45 21/30-90/45