Subtract 28/16 from 70/45
1st number: 1 25/45, 2nd number: 1 12/16
70/45 - 28/16 is -7/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
70/45 = 70 × 16/45 × 16 = 1120/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
28/16 = 28 × 45/16 × 45 = 1260/720 - Subtract the two like fractions:
1120/720 - 1260/720 = 1120 - 1260/720 = -140/720 - After reducing the fraction, the answer is -7/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45-56/16 70/90-28/16 70/45-28/32 70/45-84/16 70/45-28/48 70/45-28/80