Subtract 14/70 from 84/90
84/90 - 14/70 is 11/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
84/90 = 84 × 7/90 × 7 = 588/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
14/70 = 14 × 9/70 × 9 = 126/630 - Subtract the two like fractions:
588/630 - 126/630 = 588 - 126/630 = 462/630 - After reducing the fraction, the answer is 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90-28/70 84/90-42/70 84/90-98/70