Subtract 49/15 from 14/21, Solve 14/21

Subtract 49/15 from 14/21

1^st number: 14/21, 2^nd number: 3 4/15

14/21 - 49/15 is -13/5.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 15 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 21 × 5 = 105,
14/21 = 14 × 5/21 × 5 = 70/105
Likewise, for the 2nd fraction, since 15 × 7 = 105,
49/15 = 49 × 7/15 × 7 = 343/105
Subtract the two like fractions:
70/105 - 343/105 = 70 - 343/105 = -273/105
After reducing the fraction, the answer is -13/5

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