Subtract 70/48 from 40/84
1st number: 40/84, 2nd number: 1 22/48
40/84 - 70/48 is -55/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 84 × 4 = 336,
40/84 = 40 × 4/84 × 4 = 160/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
70/48 = 70 × 7/48 × 7 = 490/336 - Subtract the two like fractions:
160/336 - 490/336 = 160 - 490/336 = -330/336 - After reducing the fraction, the answer is -55/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84-70/48 40/84-70/96