Subtract 70/18 from 9/49, Solve 9/49

Subtract 70/18 from 9/49

1^st number: 9/49, 2^nd number: 3 16/18

9/49 - 70/18 is -1634/441.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 18 is 882

Next, find the equivalent fraction of both fractional numbers with denominator 882
For the 1st fraction, since 49 × 18 = 882,
9/49 = 9 × 18/49 × 18 = 162/882
Likewise, for the 2nd fraction, since 18 × 49 = 882,
70/18 = 70 × 49/18 × 49 = 3430/882
Subtract the two like fractions:
162/882 - 3430/882 = 162 - 3430/882 = -3268/882
After reducing the fraction, the answer is -1634/441

MathStep (Works offline)

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