Subtract 70/64 from 5/42
1st number: 5/42, 2nd number: 1 6/64
5/42 - 70/64 is -655/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 42 × 32 = 1344,
5/42 = 5 × 32/42 × 32 = 160/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
70/64 = 70 × 21/64 × 21 = 1470/1344 - Subtract the two like fractions:
160/1344 - 1470/1344 = 160 - 1470/1344 = -1310/1344 - After reducing the fraction, the answer is -655/672
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/42-70/64 5/84-70/64 15/42-70/64 25/42-70/64 35/42-70/64