Subtract 70/56 from 8/42
1st number: 8/42, 2nd number: 1 14/56
8/42 - 70/56 is -89/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
8/42 = 8 × 4/42 × 4 = 32/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
70/56 = 70 × 3/56 × 3 = 210/168 - Subtract the two like fractions:
32/168 - 210/168 = 32 - 210/168 = -178/168 - After reducing the fraction, the answer is -89/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/42-70/56 8/84-70/56 24/42-70/56 40/42-70/56 56/42-70/56