Subtract 70/49 from 9/63, Solve 9/63

Subtract 70/49 from 9/63

1^st number: 9/63, 2^nd number: 1 21/49

9/63 - 70/49 is -9/7.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 49 is 441

Next, find the equivalent fraction of both fractional numbers with denominator 441
For the 1st fraction, since 63 × 7 = 441,
9/63 = 9 × 7/63 × 7 = 63/441
Likewise, for the 2nd fraction, since 49 × 9 = 441,
70/49 = 70 × 9/49 × 9 = 630/441
Subtract the two like fractions:
63/441 - 630/441 = 63 - 630/441 = -567/441
After reducing the fraction, the answer is -9/7

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