Subtract 7/50 from 42/30
1st number: 1 12/30, 2nd number: 7/50
42/30 - 7/50 is 63/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 50 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 50 × 3 = 150,
7/50 = 7 × 3/50 × 3 = 21/150 - Subtract the two like fractions:
210/150 - 21/150 = 210 - 21/150 = 189/150 - After reducing the fraction, the answer is 63/50
- In mixed form: 113/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30-7/50 42/30-14/50 42/60-7/50 42/30-21/50 42/90-7/50 42/30-35/50 42/30-49/50