What is five less than one fourth the quantity of three times a number plus eight?

(((x*3)/4)+8)-5 = y

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Assume the number is Y

three times the number + 8 = 3Y + 8

1/4 th this quantity is (3Y + 8)/4

then 5 less this quantity = 5 - (3Y + 8)/4

Assume Y = 4 for example then the result is zero

Assume Y = 8 for example then the result is -3

Assume Y = zero then the result is +3