suppose that your teacher gives the following directions: "Choose a number. subtract eight. multiply your answer by two. Take the oppisite of your answer. subtract 17. add four times your number. then add neg. four. write an expression for this then simplify. when a student gives your teacher a answer what should your teacher do to find the original number."
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Verified answer
(n-8)*2
2(n-8)
2n-16
-2n+16-17+4n-4
2n=-5
n=-5/2 or -2.5
Hope I helped.
Maxwell
just plug it in for "the number"