Subtract 98/20 from 3/49, Solve 3/49

Subtract 98/20 from 3/49

1^st number: 3/49, 2^nd number: 4 18/20

3/49 - 98/20 is -2371/490.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980

Next, find the equivalent fraction of both fractional numbers with denominator 980
For the 1st fraction, since 49 × 20 = 980,
3/49 = 3 × 20/49 × 20 = 60/980
Likewise, for the 2nd fraction, since 20 × 49 = 980,
98/20 = 98 × 49/20 × 49 = 4802/980
Subtract the two like fractions:
60/980 - 4802/980 = 60 - 4802/980 = -4742/980
After reducing the fraction, the answer is -2371/490

MathStep (Works offline)

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