Subtract 81/50 from 42/9
1st number: 4 6/9, 2nd number: 1 31/50
42/9 - 81/50 is 457/150.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 9 × 50 = 450,
42/9 = 42 × 50/9 × 50 = 2100/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
81/50 = 81 × 9/50 × 9 = 729/450 - Subtract the two like fractions:
2100/450 - 729/450 = 2100 - 729/450 = 1371/450 - After reducing the fraction, the answer is 457/150
- In mixed form: 37/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9-81/50 42/18-81/50 42/27-81/50 42/45-81/50 42/63-81/50