Subtract 56/84 from 75/70
1st number: 1 5/70, 2nd number: 56/84
75/70 - 56/84 is 17/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
75/70 = 75 × 6/70 × 6 = 450/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
56/84 = 56 × 5/84 × 5 = 280/420 - Subtract the two like fractions:
450/420 - 280/420 = 450 - 280/420 = 170/420 - After reducing the fraction, the answer is 17/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: