Subtract 12/20 from 40/16, Solve 2 8/16

Subtract 12/20 from 40/16

1^st number: 2 8/16, 2^nd number: 12/20

40/16 - 12/20 is 19/10.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 16 × 5 = 80,
40/16 = 40 × 5/16 × 5 = 200/80
Likewise, for the 2nd fraction, since 20 × 4 = 80,
12/20 = 12 × 4/20 × 4 = 48/80
Subtract the two like fractions:
200/80 - 48/80 = 200 - 48/80 = 152/80
After reducing the fraction, the answer is 19/10
In mixed form: 19/10

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