Subtract 48/42 from 84/4
1st number: 21 0/4, 2nd number: 1 6/42
84/4 - 48/42 is 139/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
84/4 = 84 × 21/4 × 21 = 1764/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
48/42 = 48 × 2/42 × 2 = 96/84 - Subtract the two like fractions:
1764/84 - 96/84 = 1764 - 96/84 = 1668/84 - After reducing the fraction, the answer is 139/7
- In mixed form: 196/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-96/42 84/8-48/42 84/4-48/84 84/12-48/42 84/20-48/42 84/28-48/42