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2 (n - 3) = 12 - 8n

2006-11-29 16:29:54 · 14 answers · asked by Mell 3 in Science & Mathematics Mathematics

14 answers

2n -6 = 12 - 8n

add 6 to each side

2n = 18 - 8n

add 8n to each side

10n = 18

divide both sides by 10

n= 18/10 = 1 4/5

2006-11-29 16:32:10 · answer #1 · answered by ♪ ♫ ☮ NYbron ☮ ♪ ♫ 6 · 0 0

Q : 2 (n - 3) = 12 - 8n
first, open up the bracket.
and you get:
2n - 6 = 12 - 8n

second, move '-6' to the right side of the equation.
and you get:
2n = 12 - 8n + 6

third, move '-8n' to the left side of the equation.
and you get:
2n + 8n = 12 + 6

forth, do the addition.
and you get:
10n = 18

then, divide 18 by 10 so that you get 'n' equals to ___.
and you get:
n = 18/10
= 1 8/10 or 9/5 or 1 4/5 or 1.8 [the answer(s)]

2006-11-29 17:11:28 · answer #2 · answered by Jaslyn N 1 · 0 0

distribute
2n-6=12-8n
put the on one side
2n+8n=12+6
add
10n=18
divide by 10
n=18/10 or 9/5

2006-11-29 16:34:43 · answer #3 · answered by logan 2 · 0 0

2(n-3)=12-8n
2n+8n-6 =12+6
(10n=18)/10
n=1 8/10=1 4/5, or 1.8

2006-11-29 16:41:51 · answer #4 · answered by Max 6 · 0 0

1. multiply 2(n-3) to get 2n-6
2. now 2n-6 = 12-8n
3. add 8n to both sides to get 10n-6 = 12
4. add 6 to each side to get 10n = 18
5 finally divide both sides by 10, now n = 1.8 which is the correct solution
6 check by replacing n with 1.8 in orginal equation to see if it balances, which it does

2006-11-29 16:52:45 · answer #5 · answered by wealthmaster 3 · 0 0

it depends what the problem is....

2 (n - 3) = 12 - 8n
2n -6 = 12 - 8n
2n = 18 - 8n
10n = 18
n= 18/10 = 9/5
.

2006-11-29 16:32:28 · answer #6 · answered by Anonymous · 0 0

2 (n - 3) = 12 - 8n divide by 2
n-3=6-4n add 4n+3
5n=9 divide by 5
n-1.8

2006-11-29 16:37:02 · answer #7 · answered by yupchagee 7 · 0 0

2(n - 3) = 12 - 8n
n - 3 = 6 - 4n
5n = 9
n = 9/5

2006-11-29 16:34:52 · answer #8 · answered by Colin G 1 · 0 0

should be like this;

2n-6=12-8n
2n+8n=12+6
10n=18
n=18/10
n=1.8

thats it

2006-11-29 16:33:34 · answer #9 · answered by Anonymous · 0 0

2(n-3)=12-8n
2n-6=12-8n
2n=18-8n
10n=18
n=18/10
n=9/5
PAY ATTENTION IN CLASS YOULL REGRET IT ON TEST DAY-= TRUST ME I HAVE A TRIGNOMETRY TEST TOMORROW AND I AM FUDGED!!!!!!

2006-11-29 16:33:36 · answer #10 · answered by Gui 2 · 0 0

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