Subtract 45/10 from 4/84, Solve 4/84

Subtract 45/10 from 4/84

1^st number: 4/84, 2^nd number: 4 5/10

4/84 - 45/10 is -187/42.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 84 × 5 = 420,
4/84 = 4 × 5/84 × 5 = 20/420
Likewise, for the 2nd fraction, since 10 × 42 = 420,
45/10 = 45 × 42/10 × 42 = 1890/420
Subtract the two like fractions:
20/420 - 1890/420 = 20 - 1890/420 = -1870/420
After reducing the fraction, the answer is -187/42

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