Subtract 30/16 from 42/4
1st number: 10 2/4, 2nd number: 1 14/16
42/4 - 30/16 is 69/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 4 × 4 = 16,
42/4 = 42 × 4/4 × 4 = 168/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
30/16 = 30 × 1/16 × 1 = 30/16 - Subtract the two like fractions:
168/16 - 30/16 = 168 - 30/16 = 138/16 - After reducing the fraction, the answer is 69/8
- In mixed form: 85/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4-30/16 42/4-60/16 42/8-30/16 42/4-30/32 42/4-90/16 42/12-30/16 42/4-30/48 42/20-30/16 42/4-30/80 42/28-30/16