Subtract 2/80 from 84/10, Solve 8 4/10

Subtract 2/80 from 84/10

1^st number: 8 4/10, 2^nd number: 2/80

84/10 - 2/80 is 67/8.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 10 × 8 = 80,
84/10 = 84 × 8/10 × 8 = 672/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
2/80 = 2 × 1/80 × 1 = 2/80
Subtract the two like fractions:
672/80 - 2/80 = 672 - 2/80 = 670/80
After reducing the fraction, the answer is 67/8
In mixed form: 83/8

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