Subtract 80/10 from 42/48
1st number: 42/48, 2nd number: 8 0/10
42/48 - 80/10 is -57/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 10 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 48 × 5 = 240,
42/48 = 42 × 5/48 × 5 = 210/240 - Likewise, for the 2nd fraction, since 10 × 24 = 240,
80/10 = 80 × 24/10 × 24 = 1920/240 - Subtract the two like fractions:
210/240 - 1920/240 = 210 - 1920/240 = -1710/240 - After reducing the fraction, the answer is -57/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/48-80/10 42/96-80/10 42/48-80/20 42/48-80/30 42/48-80/50 42/48-80/70