Subtract 10/12 from 84/42
1st number: 2 0/42, 2nd number: 10/12
84/42 - 10/12 is 7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
84/42 = 84 × 2/42 × 2 = 168/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
10/12 = 10 × 7/12 × 7 = 70/84 - Subtract the two like fractions:
168/84 - 70/84 = 168 - 70/84 = 98/84 - After reducing the fraction, the answer is 7/6
- In mixed form: 11/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/42-20/12 84/42-10/24 84/42-30/12 84/42-10/36 84/42-50/12 84/42-10/60 84/42-70/12 84/42-10/84