Subtract 12/40 from 60/42
1st number: 1 18/42, 2nd number: 12/40
60/42 - 12/40 is 79/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
60/42 = 60 × 20/42 × 20 = 1200/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
12/40 = 12 × 21/40 × 21 = 252/840 - Subtract the two like fractions:
1200/840 - 252/840 = 1200 - 252/840 = 948/840 - After reducing the fraction, the answer is 79/70
- In mixed form: 19/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42-24/40 60/84-12/40 60/42-12/80 60/42-36/40 60/42-60/40 60/42-84/40