Subtract 9/4 from 70/84
1st number: 70/84, 2nd number: 2 1/4
70/84 - 9/4 is -17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
70/84 = 70 × 1/84 × 1 = 70/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
9/4 = 9 × 21/4 × 21 = 189/84 - Subtract the two like fractions:
70/84 - 189/84 = 70 - 189/84 = -119/84 - After reducing the fraction, the answer is -17/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84-18/4 70/84-9/8 70/84-27/4 70/84-9/12 70/84-45/4 70/84-9/20 70/84-63/4 70/84-9/28