Question

hey what is 5 over 9 = 3n-2 over 18 i got 10 but the textbook answer says 9 can u please help me

Answer 1

ok lets see if I can go through and find out where you might have gone wrong

Answer 2

ok thank you

Answer 3

ok I got n=4

Answer 4

But how if the book says 9

Answer 5

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

Answer 6

what do the directions say in the book

Answer 7

they just say to find what the exponent equals

Answer 8

well n=4 idk how they got it equals 9..?

Answer 9

show me what you did to get 10

Answer 10

3n-2=1n
9*1=9n
9n=5*18
9n=90
90/9=10
n=10

Answer 11

thats what i did

Answer 12

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.

Answer 13

so should i do this:
9-2=7
7*3n=21n
21n=5*18
21n=90
90/27=3
i dont get this

Answer 14

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

Answer 15

ok thanks

Answer 16

no problem

Answer 17

ok bye