Subtract 98/70 from 1/49, Solve 1/49

Subtract 98/70 from 1/49

1^st number: 1/49, 2^nd number: 1 28/70

1/49 - 98/70 is -338/245.

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,
1/49 = 1 × 10/49 × 10 = 10/490
Likewise, for the 2nd fraction, since 70 × 7 = 490,
98/70 = 98 × 7/70 × 7 = 686/490
Subtract the two like fractions:
10/490 - 686/490 = 10 - 686/490 = -676/490
After reducing the fraction, the answer is -338/245

MathStep (Works offline)

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