Subtract 3/42 from 84/30
1st number: 2 24/30, 2nd number: 3/42
84/30 - 3/42 is 191/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
84/30 = 84 × 7/30 × 7 = 588/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
3/42 = 3 × 5/42 × 5 = 15/210 - Subtract the two like fractions:
588/210 - 15/210 = 588 - 15/210 = 573/210 - After reducing the fraction, the answer is 191/70
- In mixed form: 251/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30-6/42 84/60-3/42 84/30-3/84 84/30-9/42 84/90-3/42 84/30-15/42 84/30-21/42