Subtract 18/63 from 7/49
7/49 - 18/63 is -1/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 63 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 49 × 9 = 441,
7/49 = 7 × 9/49 × 9 = 63/441 - Likewise, for the 2nd fraction, since 63 × 7 = 441,
18/63 = 18 × 7/63 × 7 = 126/441 - Subtract the two like fractions:
63/441 - 126/441 = 63 - 126/441 = -63/441 - After reducing the fraction, the answer is -1/7
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