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

Subtract 42/30 from 16/42

1^st number: 16/42, 2^nd number: 1 12/30

16/42 - 42/30 is -107/105.

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,
16/42 = 16 × 5/42 × 5 = 80/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
42/30 = 42 × 7/30 × 7 = 294/210
Subtract the two like fractions:
80/210 - 294/210 = 80 - 294/210 = -214/210
After reducing the fraction, the answer is -107/105

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