Subtract 70/12 from 10/80
1st number: 10/80, 2nd number: 5 10/12
10/80 - 70/12 is -137/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 12 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
10/80 = 10 × 3/80 × 3 = 30/240 - Likewise, for the 2nd fraction, since 12 × 20 = 240,
70/12 = 70 × 20/12 × 20 = 1400/240 - Subtract the two like fractions:
30/240 - 1400/240 = 30 - 1400/240 = -1370/240 - After reducing the fraction, the answer is -137/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80-70/12 10/80-70/24 30/80-70/12 10/80-70/36 50/80-70/12 10/80-70/60 70/80-70/12 10/80-70/84