Subtract 98/63 from 30/84, Solve 30/84

Subtract 98/63 from 30/84

1^st number: 30/84, 2^nd number: 1 35/63

30/84 - 98/63 is -151/126.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 84 × 3 = 252,
30/84 = 30 × 3/84 × 3 = 90/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
98/63 = 98 × 4/63 × 4 = 392/252
Subtract the two like fractions:
90/252 - 392/252 = 90 - 392/252 = -302/252
After reducing the fraction, the answer is -151/126

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