Subtract 35/15 from 9/42, Solve 9/42

Subtract 35/15 from 9/42

1^st number: 9/42, 2^nd number: 2 5/15

9/42 - 35/15 is -89/42.

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,
9/42 = 9 × 5/42 × 5 = 45/210
Likewise, for the 2nd fraction, since 15 × 14 = 210,
35/15 = 35 × 14/15 × 14 = 490/210
Subtract the two like fractions:
45/210 - 490/210 = 45 - 490/210 = -445/210
After reducing the fraction, the answer is -89/42

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