Subtract 15/18 from 30/49, Solve 30/49

Subtract 15/18 from 30/49

30/49 - 15/18 is -65/294.

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,
30/49 = 30 × 18/49 × 18 = 540/882
Likewise, for the 2nd fraction, since 18 × 49 = 882,
15/18 = 15 × 49/18 × 49 = 735/882
Subtract the two like fractions:
540/882 - 735/882 = 540 - 735/882 = -195/882
After reducing the fraction, the answer is -65/294

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