Subtract 10/16 from 20/84, Solve 20/84

Subtract 10/16 from 20/84

20/84 - 10/16 is -65/168.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 16 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 84 × 4 = 336,
20/84 = 20 × 4/84 × 4 = 80/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
10/16 = 10 × 21/16 × 21 = 210/336
Subtract the two like fractions:
80/336 - 210/336 = 80 - 210/336 = -130/336
After reducing the fraction, the answer is -65/168

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