Subtract 18/8 from 6/84, Solve 6/84

Subtract 18/8 from 6/84

1^st number: 6/84, 2^nd number: 2 2/8

6/84 - 18/8 is -61/28.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 84 × 2 = 168,
6/84 = 6 × 2/84 × 2 = 12/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
18/8 = 18 × 21/8 × 21 = 378/168
Subtract the two like fractions:
12/168 - 378/168 = 12 - 378/168 = -366/168
After reducing the fraction, the answer is -61/28

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