Subtract 21/49 from 2/15, Solve 2/15

Subtract 21/49 from 2/15

2/15 - 21/49 is -31/105.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 49 is 735

Next, find the equivalent fraction of both fractional numbers with denominator 735
For the 1st fraction, since 15 × 49 = 735,
2/15 = 2 × 49/15 × 49 = 98/735
Likewise, for the 2nd fraction, since 49 × 15 = 735,
21/49 = 21 × 15/49 × 15 = 315/735
Subtract the two like fractions:
98/735 - 315/735 = 98 - 315/735 = -217/735
After reducing the fraction, the answer is -31/105

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