Subtract 36/70 from 8/28
8/28 - 36/70 is -8/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
8/28 = 8 × 5/28 × 5 = 40/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
36/70 = 36 × 2/70 × 2 = 72/140 - Subtract the two like fractions:
40/140 - 72/140 = 40 - 72/140 = -32/140 - After reducing the fraction, the answer is -8/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/28-36/70 8/28-72/70 8/56-36/70 24/28-36/70 8/84-36/70 40/28-36/70 56/28-36/70