Subtract 42/16 from 8/84, Solve 8/84

Subtract 42/16 from 8/84

1^st number: 8/84, 2^nd number: 2 10/16

8/84 - 42/16 is -425/168.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 16 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 84 × 4 = 336,
8/84 = 8 × 4/84 × 4 = 32/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
42/16 = 42 × 21/16 × 21 = 882/336
Subtract the two like fractions:
32/336 - 882/336 = 32 - 882/336 = -850/336
After reducing the fraction, the answer is -425/168

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