Subtract 30/90 from 12/2
1st number: 6 0/2, 2nd number: 30/90
12/2 - 30/90 is 17/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
12/2 = 12 × 45/2 × 45 = 540/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
30/90 = 30 × 1/90 × 1 = 30/90 - Subtract the two like fractions:
540/90 - 30/90 = 540 - 30/90 = 510/90 - After reducing the fraction, the answer is 17/3
- In mixed form: 52/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/2-30/90 12/2-60/90 12/4-30/90 36/2-30/90 12/6-30/90 60/2-30/90 12/10-30/90 84/2-30/90 12/14-30/90