Subtract 4/84 from 40/2, Solve 20 0/2

Subtract 4/84 from 40/2

1^st number: 20 0/2, 2^nd number: 4/84

40/2 - 4/84 is 419/21.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 84 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 2 × 42 = 84,
40/2 = 40 × 42/2 × 42 = 1680/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
4/84 = 4 × 1/84 × 1 = 4/84
Subtract the two like fractions:
1680/84 - 4/84 = 1680 - 4/84 = 1676/84
After reducing the fraction, the answer is 419/21
In mixed form: 1920/21

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