Question

i divide my house number by 3 and then subtract 3 . if it gives the answer zero what is my house number

Answer 1

Let the number be X

$\frac{x}{3} - 3 = 0 \\ \frac{x - 9}{3} = 0 \\ x - 9 = 0 \\ x = 9$
Hence the house number is 9

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