Solve for n. (1/3)(6n-9)=5n?

2008-06-21 3:29 pm
Please show your work. This is a study

回答 (10)

2008-06-21 10:36 pm
✔ 最佳答案
6n - 9 = 15n
- 9 = 9n
n = - 1
2016-04-04 6:05 pm
n - 8 + n = 1 - 4n n + n + 4n = 1 + 8 6n = 9 n = 9/6 = 3/2 = 1½
2008-06-21 4:00 pm
(1/3)(6n - 9) = 5n
(6n - 9)/3 = 5n
2n - 3 = 5n
2n - 5n = 3
-3n = 3
n = 3/-3
n = -1
2008-06-21 3:58 pm
Multiply the 1/3 through

(1/3)*6n - (1/3)*9 = 5n

(1/3)*6 = 2 (1/3)*9 = 3


2n - 3 = 5n

Subtract 2n from both sides

2n - 2n - 3 = 5n - 2n

-3 = 3n

Divide both sides by 3

-3/3 = -1 = 3n/3 = n
參考: Longtime college math teacher
2008-06-21 3:44 pm
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2008-06-21 3:40 pm
[(1/3)(6n-9)=5n]3
(6n-9)-6n=15n-6n
-9/9=9n/9
-1=n
n=-1
2008-06-21 3:36 pm
(1/3)(6n-9) = 5n
6n-9 = 15n
-9n = 9
n = -1
2008-06-21 3:35 pm
(1/3)(6n-9)=5n....................*3
6n-9=15n
15n-6n=-9
9n=-9...............divided by9

n=-9/9=-1
2008-06-21 3:34 pm
1/3 (6n-9)=5n

2n-3=5n
-3=3n
-1=n
2008-06-21 3:32 pm
(1/3)(6n - 9) = 5n
6n - 9 = 15n
15n - 6n = -9
9n = -9
n = -1


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