Subtract 84/12 from 30/75
1st number: 30/75, 2nd number: 7 0/12
30/75 - 84/12 is -33/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 12 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
30/75 = 30 × 4/75 × 4 = 120/300 - Likewise, for the 2nd fraction, since 12 × 25 = 300,
84/12 = 84 × 25/12 × 25 = 2100/300 - Subtract the two like fractions:
120/300 - 2100/300 = 120 - 2100/300 = -1980/300 - After reducing the fraction, the answer is -33/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/75-84/12 30/75-84/24 90/75-84/12 30/75-84/36 30/75-84/60