Subtract 30/10 from 42/16
1st number: 2 10/16, 2nd number: 3 0/10
42/16 - 30/10 is -3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 10 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
42/16 = 42 × 5/16 × 5 = 210/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
30/10 = 30 × 8/10 × 8 = 240/80 - Subtract the two like fractions:
210/80 - 240/80 = 210 - 240/80 = -30/80 - After reducing the fraction, the answer is -3/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16-30/10 42/16-60/10 42/32-30/10 42/16-30/20 42/16-90/10 42/48-30/10 42/80-30/10 42/16-30/50 42/16-30/70