Subtract 12/18 from 30/49
30/49 - 12/18 is -8/147.
Steps for subtracting fractions
- 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,
12/18 = 12 × 49/18 × 49 = 588/882 - Subtract the two like fractions:
540/882 - 588/882 = 540 - 588/882 = -48/882 - After reducing the fraction, the answer is -8/147
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