Subtract 63/10 from 70/42
1st number: 1 28/42, 2nd number: 6 3/10
70/42 - 63/10 is -139/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
70/42 = 70 × 5/42 × 5 = 350/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
63/10 = 63 × 21/10 × 21 = 1323/210 - Subtract the two like fractions:
350/210 - 1323/210 = 350 - 1323/210 = -973/210 - After reducing the fraction, the answer is -139/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84-63/10 70/42-63/20 70/42-63/30 70/42-63/50 70/42-63/70