Subtract 90/42 from 54/16
1st number: 3 6/16, 2nd number: 2 6/42
54/16 - 90/42 is 69/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 42 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
54/16 = 54 × 21/16 × 21 = 1134/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
90/42 = 90 × 8/42 × 8 = 720/336 - Subtract the two like fractions:
1134/336 - 720/336 = 1134 - 720/336 = 414/336 - After reducing the fraction, the answer is 69/56
- In mixed form: 113/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/32-90/42 54/16-90/84 54/48-90/42 54/80-90/42