Subtract 84/30 from 25/42
1st number: 25/42, 2nd number: 2 24/30
25/42 - 84/30 is -463/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
25/42 = 25 × 5/42 × 5 = 125/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
84/30 = 84 × 7/30 × 7 = 588/210 - Subtract the two like fractions:
125/210 - 588/210 = 125 - 588/210 = -463/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42-84/30 25/84-84/30 25/42-84/60 75/42-84/30 25/42-84/90