Subtract 72/16 from 10/84, Solve 10/84

Subtract 72/16 from 10/84

1^st number: 10/84, 2^nd number: 4 8/16

10/84 - 72/16 is -92/21.

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,
10/84 = 10 × 4/84 × 4 = 40/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
72/16 = 72 × 21/16 × 21 = 1512/336
Subtract the two like fractions:
40/336 - 1512/336 = 40 - 1512/336 = -1472/336
After reducing the fraction, the answer is -92/21

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