Subtract 1/75 from 42/30
1st number: 1 12/30, 2nd number: 1/75
42/30 - 1/75 is 104/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 75 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 30 × 5 = 150,
42/30 = 42 × 5/30 × 5 = 210/150 - Likewise, for the 2nd fraction, since 75 × 2 = 150,
1/75 = 1 × 2/75 × 2 = 2/150 - Subtract the two like fractions:
210/150 - 2/150 = 210 - 2/150 = 208/150 - After reducing the fraction, the answer is 104/75
- In mixed form: 129/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30-1/75 42/30-2/75 42/60-1/75 42/30-3/75 42/90-1/75 42/30-5/75 42/30-7/75