Subtract 4/42 from 40/5, Solve 8 0/5

Subtract 4/42 from 40/5

1^st number: 8 0/5, 2^nd number: 4/42

40/5 - 4/42 is 166/21.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 5 × 42 = 210,
40/5 = 40 × 42/5 × 42 = 1680/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
4/42 = 4 × 5/42 × 5 = 20/210
Subtract the two like fractions:
1680/210 - 20/210 = 1680 - 20/210 = 1660/210
After reducing the fraction, the answer is 166/21
In mixed form: 719/21

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