Subtract 30/15 from 2/42, Solve 2/42

Subtract 30/15 from 2/42

1^st number: 2/42, 2^nd number: 2 0/15

2/42 - 30/15 is -41/21.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
2/42 = 2 × 5/42 × 5 = 10/210
Likewise, for the 2nd fraction, since 15 × 14 = 210,
30/15 = 30 × 14/15 × 14 = 420/210
Subtract the two like fractions:
10/210 - 420/210 = 10 - 420/210 = -410/210
After reducing the fraction, the answer is -41/21

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