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step by step help please thx.

give out best answer

2006-10-12 14:06:59 · 19 answers · asked by Anonymous in Science & Mathematics Mathematics

19 answers

6+5n=2n-9
6+9=2n-5n
15=-3n
-5=n

2006-10-12 14:08:39 · answer #1 · answered by BugGurl 3 · 2 0

n=-5

6+5n=2n-9
6+5(-5)=2(-5)-9
6+(-25)=(-10)-9
"6+(-25)= -19" And "(-10)-9= -19"

-19 = -19

The Equation Is Equal With -5 As The Variable.
Now Finish The Rest Of Your Homework By Yourself....

2006-10-12 21:14:00 · answer #2 · answered by Can't Make A Good Avatar!!! 3 · 0 0

6+5n=2n-9
6+9=2n-5n
15=-3n
15/-3=n
-5=n
n=-5

2006-10-14 05:30:20 · answer #3 · answered by srirad 2 · 0 0

6 + 5n = 2n - 9 (Subtract 2n and 6 from both sides)
3n = -15 (Divide both sides by 3)
n = -5

Check:
6 + 5(-5) = 2(-5) - 9
6 - 25 = -10 - 9
-19 = -19
QED

2006-10-13 01:53:41 · answer #4 · answered by CSUFGrad2006 5 · 0 0

6+5n=2n-9
get the n on one side:
6+5n-2n=2n-9-2n
you end up with:
6+3n= -9
again, keep the n on one side by subtracting the 6 on both sides:
6+3n-6= -9-6
3n= -15
divide 3 on both sides to solve for n:
3n/3= -15/3
n= -15/3 = -5

2006-10-12 21:11:24 · answer #5 · answered by Anonymous · 0 0

6+5n=2n-9 subtract 2n from each side
6+3n=-9 subtract 6 from each side
3n=-15 divide each side by 3
n=-5

2006-10-12 21:59:45 · answer #6 · answered by yupchagee 7 · 0 0

6 + 5n = 2n - 9
5n - 2n = -9 -6 ( taking 2n to left side changing the sign to negative and taking 6 to right side makin it -6 )
3n = -15
n= -15/3 ( taking 3 to right leaving only the variable "n" and solving it )
n= -5

2006-10-12 21:11:34 · answer #7 · answered by coldfish85 2 · 0 0

6+5n=2n-9
6+5n - 5n = 2n - 9 - 5n
6=-3n -9
6+9=-3n-9+9
15 = -3n
15/-3 = -3n/-3
-5 = n

2006-10-12 21:09:36 · answer #8 · answered by just browsin 6 · 0 0

6+5n=2n-9

Take 2n to the left hand side:
6+3n=-9

Take 6 to the right hand side:
3n=-15

Divide both sides by 3:
n=-5

2006-10-12 21:08:57 · answer #9 · answered by Simon Says Touch Your Nose 5 · 1 0

6 + 5n = (2n - 9)
5n -2n =( -9 -6)
3n =( -15)
n =( -15/3)
n = (-5)

2006-10-12 21:33:51 · answer #10 · answered by Danny_V 1 · 0 0

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