Subtract 6/30 from 4/84, Solve 4/84

Subtract 6/30 from 4/84

4/84 - 6/30 is -16/105.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 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 30 × 14 = 420,
6/30 = 6 × 14/30 × 14 = 84/420
Subtract the two like fractions:
20/420 - 84/420 = 20 - 84/420 = -64/420
After reducing the fraction, the answer is -16/105

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