Subtract 36/70 from 4/84
4/84 - 36/70 is -7/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
4/84 = 4 × 5/84 × 5 = 20/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
36/70 = 36 × 6/70 × 6 = 216/420 - Subtract the two like fractions:
20/420 - 216/420 = 20 - 216/420 = -196/420 - After reducing the fraction, the answer is -7/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/84-36/70 4/84-72/70 12/84-36/70 20/84-36/70 28/84-36/70