Subtract 2/7 from 84/4
1st number: 21 0/4, 2nd number: 2/7
84/4 - 2/7 is 145/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
84/4 = 84 × 7/4 × 7 = 588/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
2/7 = 2 × 4/7 × 4 = 8/28 - Subtract the two like fractions:
588/28 - 8/28 = 588 - 8/28 = 580/28 - After reducing the fraction, the answer is 145/7
- In mixed form: 205/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-4/7 84/8-2/7 84/4-2/14 84/4-6/7 84/12-2/7 84/4-2/21 84/4-10/7 84/20-2/7 84/4-2/35 84/4-14/7 84/28-2/7 84/4-2/49