Subtract 10/75 from 4/80, Solve 4/80

Subtract 10/75 from 4/80

4/80 - 10/75 is -1/12.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 75 is 1200

Next, find the equivalent fraction of both fractional numbers with denominator 1200
For the 1st fraction, since 80 × 15 = 1200,
4/80 = 4 × 15/80 × 15 = 60/1200
Likewise, for the 2nd fraction, since 75 × 16 = 1200,
10/75 = 10 × 16/75 × 16 = 160/1200
Subtract the two like fractions:
60/1200 - 160/1200 = 60 - 160/1200 = -100/1200
After reducing the fraction, the answer is -1/12

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