Subtract 42/30 from 3/36
1st number: 3/36, 2nd number: 1 12/30
3/36 - 42/30 is -79/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 30 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
3/36 = 3 × 5/36 × 5 = 15/180 - Likewise, for the 2nd fraction, since 30 × 6 = 180,
42/30 = 42 × 6/30 × 6 = 252/180 - Subtract the two like fractions:
15/180 - 252/180 = 15 - 252/180 = -237/180 - After reducing the fraction, the answer is -79/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/36-42/30 3/36-84/30 3/72-42/30 3/36-42/60 9/36-42/30 3/36-42/90 15/36-42/30 21/36-42/30