Subtract 42/10 from 20/75
1st number: 20/75, 2nd number: 4 2/10
20/75 - 42/10 is -59/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 10 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 75 × 2 = 150,
20/75 = 20 × 2/75 × 2 = 40/150 - Likewise, for the 2nd fraction, since 10 × 15 = 150,
42/10 = 42 × 15/10 × 15 = 630/150 - Subtract the two like fractions:
40/150 - 630/150 = 40 - 630/150 = -590/150 - After reducing the fraction, the answer is -59/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/75-42/10 20/75-84/10 20/75-42/20 60/75-42/10 20/75-42/30 20/75-42/50 20/75-42/70