Subtract 16/30 from 5/42, Solve 5/42

Subtract 16/30 from 5/42

5/42 - 16/30 is -29/70.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
5/42 = 5 × 5/42 × 5 = 25/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
16/30 = 16 × 7/30 × 7 = 112/210
Subtract the two like fractions:
25/210 - 112/210 = 25 - 112/210 = -87/210
After reducing the fraction, the answer is -29/70

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