Subtract 84/64 from 10/42
1st number: 10/42, 2nd number: 1 20/64
10/42 - 84/64 is -361/336.
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,
10/42 = 10 × 32/42 × 32 = 320/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
84/64 = 84 × 21/64 × 21 = 1764/1344 - Subtract the two like fractions:
320/1344 - 1764/1344 = 320 - 1764/1344 = -1444/1344 - After reducing the fraction, the answer is -361/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42-84/64 10/84-84/64 30/42-84/64 50/42-84/64 70/42-84/64