Subtract 12/80 from 42/5, Solve 8 2/5

Subtract 12/80 from 42/5

1^st number: 8 2/5, 2^nd number: 12/80

42/5 - 12/80 is 33/4.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 5 × 16 = 80,
42/5 = 42 × 16/5 × 16 = 672/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
12/80 = 12 × 1/80 × 1 = 12/80
Subtract the two like fractions:
672/80 - 12/80 = 672 - 12/80 = 660/80
After reducing the fraction, the answer is 33/4
In mixed form: 81/4

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