Subtract 42/45 from 3/50
3/50 - 42/45 is -131/150.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 45 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
3/50 = 3 × 9/50 × 9 = 27/450 - Likewise, for the 2nd fraction, since 45 × 10 = 450,
42/45 = 42 × 10/45 × 10 = 420/450 - Subtract the two like fractions:
27/450 - 420/450 = 27 - 420/450 = -393/450 - After reducing the fraction, the answer is -131/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/50-42/45 3/50-84/45 3/50-42/90 9/50-42/45 15/50-42/45 21/50-42/45