briannafromtheb briannafromtheb

30-01-2015
Mathematics

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Think of a number. Double it. Add six. Half it. Take away the number you started with. Your answer is 3.

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konrad509 konrad509

30-01-2015

[tex](x\cdot2+6)\div2-x=3\\ (2x+6)\div 2-x=3\\ x+3-x=3\\ x-x=3-3\\ 0=0[/tex]

That number can be any real number.

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