Subtract 9/16 from 20/75, Solve 20/75

Subtract 9/16 from 20/75

20/75 - 9/16 is -71/240.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 16 is 1200

Next, find the equivalent fraction of both fractional numbers with denominator 1200
For the 1st fraction, since 75 × 16 = 1200,
20/75 = 20 × 16/75 × 16 = 320/1200
Likewise, for the 2nd fraction, since 16 × 75 = 1200,
9/16 = 9 × 75/16 × 75 = 675/1200
Subtract the two like fractions:
320/1200 - 675/1200 = 320 - 675/1200 = -355/1200
After reducing the fraction, the answer is -71/240

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