Subtract 12/49 from 9/42
9/42 - 12/49 is -3/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 49 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 42 × 7 = 294,
9/42 = 9 × 7/42 × 7 = 63/294 - Likewise, for the 2nd fraction, since 49 × 6 = 294,
12/49 = 12 × 6/49 × 6 = 72/294 - Subtract the two like fractions:
63/294 - 72/294 = 63 - 72/294 = -9/294 - After reducing the fraction, the answer is -3/98
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