Subtract 18/60 from 42/2
1st number: 21 0/2, 2nd number: 18/60
42/2 - 18/60 is 207/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 2 × 30 = 60,
42/2 = 42 × 30/2 × 30 = 1260/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
18/60 = 18 × 1/60 × 1 = 18/60 - Subtract the two like fractions:
1260/60 - 18/60 = 1260 - 18/60 = 1242/60 - After reducing the fraction, the answer is 207/10
- In mixed form: 207/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2-18/60 42/2-36/60 42/4-18/60 42/2-54/60 42/6-18/60 42/2-90/60 42/10-18/60 42/14-18/60