Subtract 4/60 from 42/80
42/80 - 4/60 is 11/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 60 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
42/80 = 42 × 3/80 × 3 = 126/240 - Likewise, for the 2nd fraction, since 60 × 4 = 240,
4/60 = 4 × 4/60 × 4 = 16/240 - Subtract the two like fractions:
126/240 - 16/240 = 126 - 16/240 = 110/240 - After reducing the fraction, the answer is 11/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80-4/60 42/80-8/60 42/80-12/60 42/80-20/60 42/80-28/60