Subtract 45/20 from 40/5, Solve 8 0/5

Subtract 45/20 from 40/5

1^st number: 8 0/5, 2^nd number: 2 5/20

40/5 - 45/20 is 23/4.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20

Next, find the equivalent fraction of both fractional numbers with denominator 20
For the 1st fraction, since 5 × 4 = 20,
40/5 = 40 × 4/5 × 4 = 160/20
Likewise, for the 2nd fraction, since 20 × 1 = 20,
45/20 = 45 × 1/20 × 1 = 45/20
Subtract the two like fractions:
160/20 - 45/20 = 160 - 45/20 = 115/20
After reducing the fraction, the answer is 23/4
In mixed form: 53/4

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