anonymous
  • anonymous
hey what is 5 over 9 = 3n-2 over 18 i got 10 but the textbook answer says 9 can u please help me
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
ok lets see if I can go through and find out where you might have gone wrong
anonymous
  • anonymous
ok thank you
anonymous
  • anonymous
ok I got n=4

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anonymous
  • anonymous
But how if the book says 9
anonymous
  • anonymous
5/9=3n-2/18 multiply each side by 18 10=3n-2 add 2 to each side 12=3n divide each side by 3 4=n
anonymous
  • anonymous
what do the directions say in the book
anonymous
  • anonymous
they just say to find what the exponent equals
anonymous
  • anonymous
well n=4 idk how they got it equals 9..?
anonymous
  • anonymous
show me what you did to get 10
anonymous
  • anonymous
3n-2=1n 9*1=9n 9n=5*18 9n=90 90/9=10 n=10
anonymous
  • anonymous
thats what i did
anonymous
  • anonymous
ok well first of al you can only add/subtract/divide/multiply common things so you wouldn't be able to subtract 2 from 3n because they are not alike.
anonymous
  • anonymous
so should i do this: 9-2=7 7*3n=21n 21n=5*18 21n=90 90/27=3 i dont get this
anonymous
  • anonymous
i think u've read something wrong with the question or the answer, cause with how u've typed it up i agree that the answer would be n=4
anonymous
  • anonymous
ok thanks
anonymous
  • anonymous
no problem
anonymous
  • anonymous
ok bye

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