Subtract 16/42 from 2/20, Solve 2/20

Subtract 16/42 from 2/20

2/20 - 16/42 is -59/210.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
2/20 = 2 × 21/20 × 21 = 42/420
Likewise, for the 2nd fraction, since 42 × 10 = 420,
16/42 = 16 × 10/42 × 10 = 160/420
Subtract the two like fractions:
42/420 - 160/420 = 42 - 160/420 = -118/420
After reducing the fraction, the answer is -59/210

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