Subtract 70/15 from 28/16
1st number: 1 12/16, 2nd number: 4 10/15
28/16 - 70/15 is -35/12.
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,
28/16 = 28 × 15/16 × 15 = 420/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
70/15 = 70 × 16/15 × 16 = 1120/240 - Subtract the two like fractions:
420/240 - 1120/240 = 420 - 1120/240 = -700/240 - After reducing the fraction, the answer is -35/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/16-70/15 28/32-70/15 28/16-70/30 84/16-70/15 28/48-70/15 28/16-70/45 28/80-70/15 28/16-70/75