Question

When a number is divided by 5 and then 3 is subtracted, the answer is the same as when the number is divided by 4 and then 2 is subtracted. Is it 0? How do I show?
x/5 -3 = x/4 -2

x/5 -x/4 = 1

4x/20 -5x/20 = 1

-x/20 = 1

-x = 20
x = -20

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