Subtract 8/5 from 84/42
1st number: 2 0/42, 2nd number: 1 3/5
84/42 - 8/5 is 2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
84/42 = 84 × 5/42 × 5 = 420/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
8/5 = 8 × 42/5 × 42 = 336/210 - Subtract the two like fractions:
420/210 - 336/210 = 420 - 336/210 = 84/210 - After reducing the fraction, the answer is 2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/42-16/5 84/42-8/10 84/42-24/5 84/42-8/15 84/42-40/5 84/42-8/25 84/42-56/5 84/42-8/35