Subtract 54/75 from 42/20
1st number: 2 2/20, 2nd number: 54/75
42/20 - 54/75 is 69/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 20 × 15 = 300,
42/20 = 42 × 15/20 × 15 = 630/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
54/75 = 54 × 4/75 × 4 = 216/300 - Subtract the two like fractions:
630/300 - 216/300 = 630 - 216/300 = 414/300 - After reducing the fraction, the answer is 69/50
- In mixed form: 119/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-54/75 42/40-54/75 42/60-54/75