Subtract 42/50 from 48/45
1st number: 1 3/45, 2nd number: 42/50
48/45 - 42/50 is 17/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 45 × 10 = 450,
48/45 = 48 × 10/45 × 10 = 480/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
42/50 = 42 × 9/50 × 9 = 378/450 - Subtract the two like fractions:
480/450 - 378/450 = 480 - 378/450 = 102/450 - After reducing the fraction, the answer is 17/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/45-42/50 48/45-84/50 48/90-42/50