Subtract 45/3 from 90/30
1st number: 3 0/30, 2nd number: 15 0/3
90/30 - 45/3 is -12/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 3 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
90/30 = 90 × 1/30 × 1 = 90/30 - Likewise, for the 2nd fraction, since 3 × 10 = 30,
45/3 = 45 × 10/3 × 10 = 450/30 - Subtract the two like fractions:
90/30 - 450/30 = 90 - 450/30 = -360/30 - After reducing the fraction, the answer is -12/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-90/3 90/60-45/3 90/30-45/6 90/30-45/9 90/30-45/15 90/30-45/21