Subtract 70/10 from 15/84
1st number: 15/84, 2nd number: 7 0/10
15/84 - 70/10 is -191/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
15/84 = 15 × 5/84 × 5 = 75/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
70/10 = 70 × 42/10 × 42 = 2940/420 - Subtract the two like fractions:
75/420 - 2940/420 = 75 - 2940/420 = -2865/420 - After reducing the fraction, the answer is -191/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/84-70/10 15/84-70/20 45/84-70/10 15/84-70/30 75/84-70/10 15/84-70/50