Subtract 30/16 from 9/15
1st number: 9/15, 2nd number: 1 14/16
9/15 - 30/16 is -51/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
9/15 = 9 × 16/15 × 16 = 144/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
30/16 = 30 × 15/16 × 15 = 450/240 - Subtract the two like fractions:
144/240 - 450/240 = 144 - 450/240 = -306/240 - After reducing the fraction, the answer is -51/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15-30/16 9/15-60/16 9/30-30/16 9/15-30/32 27/15-30/16 9/15-90/16 9/45-30/16 9/15-30/48 45/15-30/16 9/75-30/16 9/15-30/80 63/15-30/16