Subtract 75/63 from 30/49, Solve 30/49

Subtract 75/63 from 30/49

1^st number: 30/49, 2^nd number: 1 12/63

30/49 - 75/63 is -85/147.

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,
30/49 = 30 × 9/49 × 9 = 270/441
Likewise, for the 2nd fraction, since 63 × 7 = 441,
75/63 = 75 × 7/63 × 7 = 525/441
Subtract the two like fractions:
270/441 - 525/441 = 270 - 525/441 = -255/441
After reducing the fraction, the answer is -85/147

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