Subtract 45/42 from 40/2, Solve 20 0/2

Subtract 45/42 from 40/2

1^st number: 20 0/2, 2^nd number: 1 3/42

40/2 - 45/42 is 265/14.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 2 × 21 = 42,
40/2 = 40 × 21/2 × 21 = 840/42
Likewise, for the 2nd fraction, since 42 × 1 = 42,
45/42 = 45 × 1/42 × 1 = 45/42
Subtract the two like fractions:
840/42 - 45/42 = 840 - 45/42 = 795/42
After reducing the fraction, the answer is 265/14
In mixed form: 1813/14

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