Subtract 98/70 from 84/42
1st number: 2 0/42, 2nd number: 1 28/70
84/42 - 98/70 is 3/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 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 70 × 3 = 210,
98/70 = 98 × 3/70 × 3 = 294/210 - Subtract the two like fractions:
420/210 - 294/210 = 420 - 294/210 = 126/210 - After reducing the fraction, the answer is 3/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: