Subtract 90/7 from 84/2
1st number: 42 0/2, 2nd number: 12 6/7
84/2 - 90/7 is 204/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
84/2 = 84 × 7/2 × 7 = 588/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
90/7 = 90 × 2/7 × 2 = 180/14 - Subtract the two like fractions:
588/14 - 180/14 = 588 - 180/14 = 408/14 - After reducing the fraction, the answer is 204/7
- In mixed form: 291/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-90/7 84/2-90/14 84/6-90/7 84/2-90/21 84/10-90/7 84/2-90/35 84/14-90/7 84/2-90/49