Subtract 3/30 from 42/16
1st number: 2 10/16, 2nd number: 3/30
42/16 - 3/30 is 101/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 30 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 16 × 15 = 240,
42/16 = 42 × 15/16 × 15 = 630/240 - Likewise, for the 2nd fraction, since 30 × 8 = 240,
3/30 = 3 × 8/30 × 8 = 24/240 - Subtract the two like fractions:
630/240 - 24/240 = 630 - 24/240 = 606/240 - After reducing the fraction, the answer is 101/40
- In mixed form: 221/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16-3/30 42/16-6/30 42/32-3/30 42/16-3/60 42/16-9/30 42/48-3/30 42/16-3/90 42/16-15/30 42/80-3/30 42/16-21/30