Subtract 7/42 from 90/4
1st number: 22 2/4, 2nd number: 7/42
90/4 - 7/42 is 67/3.
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,
90/4 = 90 × 21/4 × 21 = 1890/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
7/42 = 7 × 2/42 × 2 = 14/84 - Subtract the two like fractions:
1890/84 - 14/84 = 1890 - 14/84 = 1876/84 - After reducing the fraction, the answer is 67/3
- In mixed form: 221/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4-14/42 90/8-7/42 90/4-7/84 90/4-21/42 90/12-7/42 90/4-35/42 90/20-7/42 90/4-49/42 90/28-7/42