Subtract 90/63 from 7/49, Solve 7/49

Subtract 90/63 from 7/49

1^st number: 7/49, 2^nd number: 1 27/63

7/49 - 90/63 is -9/7.

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,
90/63 = 90 × 7/63 × 7 = 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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