Subtract 98/84 from 7/18, Solve 7/18

Subtract 98/84 from 7/18

1^st number: 7/18, 2^nd number: 1 14/84

7/18 - 98/84 is -7/9.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 18 × 14 = 252,
7/18 = 7 × 14/18 × 14 = 98/252
Likewise, for the 2nd fraction, since 84 × 3 = 252,
98/84 = 98 × 3/84 × 3 = 294/252
Subtract the two like fractions:
98/252 - 294/252 = 98 - 294/252 = -196/252
After reducing the fraction, the answer is -7/9

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