Subtract 90/50 from 42/60
1st number: 42/60, 2nd number: 1 40/50
42/60 - 90/50 is -11/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 50 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 60 × 5 = 300,
42/60 = 42 × 5/60 × 5 = 210/300 - Likewise, for the 2nd fraction, since 50 × 6 = 300,
90/50 = 90 × 6/50 × 6 = 540/300 - Subtract the two like fractions:
210/300 - 540/300 = 210 - 540/300 = -330/300 - After reducing the fraction, the answer is -11/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/60-90/50