I think

I think a number. When I multiply it by five and subtract 477, I get the same number as if I multiplied it twice. What number do I think?

Correct answer:

x =  159

Step-by-step explanation:

5x - 477 = x·2

5·x - 477 = x·2

3x = 477

x = 477/3 = 159

x = 159

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