Subtract 3/42 from 10/5, Solve 2 0/5

Subtract 3/42 from 10/5

1^st number: 2 0/5, 2^nd number: 3/42

10/5 - 3/42 is 27/14.

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,
10/5 = 10 × 42/5 × 42 = 420/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
3/42 = 3 × 5/42 × 5 = 15/210
Subtract the two like fractions:
420/210 - 15/210 = 420 - 15/210 = 405/210
After reducing the fraction, the answer is 27/14
In mixed form: 113/14

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