Subtract 2/42 from 18/5, Solve 3 3/5

Subtract 2/42 from 18/5

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

18/5 - 2/42 is 373/105.

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,
18/5 = 18 × 42/5 × 42 = 756/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
2/42 = 2 × 5/42 × 5 = 10/210
Subtract the two like fractions:
756/210 - 10/210 = 756 - 10/210 = 746/210
After reducing the fraction, the answer is 373/105
In mixed form: 358/105

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