Subtract 50/70 from 10/49, Solve 10/49

Subtract 50/70 from 10/49

10/49 - 50/70 is -25/49.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 70 is 490

Next, find the equivalent fraction of both fractional numbers with denominator 490
For the 1st fraction, since 49 × 10 = 490,
10/49 = 10 × 10/49 × 10 = 100/490
Likewise, for the 2nd fraction, since 70 × 7 = 490,
50/70 = 50 × 7/70 × 7 = 350/490
Subtract the two like fractions:
100/490 - 350/490 = 100 - 350/490 = -250/490
After reducing the fraction, the answer is -25/49

MathStep (Works offline)

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