Subtract 42/30 from 40/5
1st number: 8 0/5, 2nd number: 1 12/30
40/5 - 42/30 is 33/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 5 × 6 = 30,
40/5 = 40 × 6/5 × 6 = 240/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Subtract the two like fractions:
240/30 - 42/30 = 240 - 42/30 = 198/30 - After reducing the fraction, the answer is 33/5
- In mixed form: 63/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5-42/30 40/5-84/30 40/10-42/30 40/5-42/60 40/15-42/30 40/5-42/90 40/25-42/30 40/35-42/30