Subtract 9/42 from 84/10
1st number: 8 4/10, 2nd number: 9/42
84/10 - 9/42 is 573/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
84/10 = 84 × 21/10 × 21 = 1764/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
9/42 = 9 × 5/42 × 5 = 45/210 - Subtract the two like fractions:
1764/210 - 45/210 = 1764 - 45/210 = 1719/210 - After reducing the fraction, the answer is 573/70
- In mixed form: 813/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10-18/42 84/20-9/42 84/10-9/84 84/10-27/42 84/30-9/42 84/10-45/42 84/50-9/42 84/10-63/42 84/70-9/42