Subtract 30/15 from 7/16
1st number: 7/16, 2nd number: 2 0/15
7/16 - 30/15 is -25/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 16 × 15 = 240,
7/16 = 7 × 15/16 × 15 = 105/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
30/15 = 30 × 16/15 × 16 = 480/240 - Subtract the two like fractions:
105/240 - 480/240 = 105 - 480/240 = -375/240 - After reducing the fraction, the answer is -25/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/16-30/15 7/16-60/15 7/32-30/15 21/16-30/15 7/16-90/15 7/48-30/15 7/16-30/45 35/16-30/15 7/80-30/15 7/16-30/75 49/16-30/15