Subtract 6/36 from 42/45
42/45 - 6/36 is 23/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
42/45 = 42 × 4/45 × 4 = 168/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
6/36 = 6 × 5/36 × 5 = 30/180 - Subtract the two like fractions:
168/180 - 30/180 = 168 - 30/180 = 138/180 - After reducing the fraction, the answer is 23/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45-6/36 42/45-12/36 42/90-6/36 42/45-6/72 42/45-18/36 42/45-30/36 42/45-42/36