Subtract 70/90 from 84/12
1st number: 7 0/12, 2nd number: 70/90
84/12 - 70/90 is 56/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
84/12 = 84 × 15/12 × 15 = 1260/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
70/90 = 70 × 2/90 × 2 = 140/180 - Subtract the two like fractions:
1260/180 - 140/180 = 1260 - 140/180 = 1120/180 - After reducing the fraction, the answer is 56/9
- In mixed form: 62/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/24-70/90 84/36-70/90 84/60-70/90