Subtract 15/90 from 10/14, Solve 10/14

Subtract 15/90 from 10/14

10/14 - 15/90 is 23/42.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 14 × 45 = 630,
10/14 = 10 × 45/14 × 45 = 450/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
15/90 = 15 × 7/90 × 7 = 105/630
Subtract the two like fractions:
450/630 - 105/630 = 450 - 105/630 = 345/630
After reducing the fraction, the answer is 23/42

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad