Subtract 63/56 from 84/42
1st number: 2 0/42, 2nd number: 1 7/56
84/42 - 63/56 is 7/8.
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,
84/42 = 84 × 4/42 × 4 = 336/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
63/56 = 63 × 3/56 × 3 = 189/168 - Subtract the two like fractions:
336/168 - 189/168 = 336 - 189/168 = 147/168 - After reducing the fraction, the answer is 7/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: