Subtract 20/5 from 45/2, Solve 22 1/2

Subtract 20/5 from 45/2

1^st number: 22 1/2, 2^nd number: 4 0/5

45/2 - 20/5 is 37/2.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 5 is 10

Next, find the equivalent fraction of both fractional numbers with denominator 10
For the 1st fraction, since 2 × 5 = 10,
45/2 = 45 × 5/2 × 5 = 225/10
Likewise, for the 2nd fraction, since 5 × 2 = 10,
20/5 = 20 × 2/5 × 2 = 40/10
Subtract the two like fractions:
225/10 - 40/10 = 225 - 40/10 = 185/10
After reducing the fraction, the answer is 37/2
In mixed form: 181/2

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