College Alg Solve for X?

2008-10-19 11:04 am
8(4x+6)=11-(x=7) X=?
更新1:

OOPS! It's 8(4x+6)=11-(x-7) Solve for x

回答 (8)

2008-10-19 11:14 am
✔ 最佳答案
did you mean
8(4x+6)=11-(x+7) ?
because then the answer would be 4/3.

If not then sorry. :)
2008-10-19 11:11 am
8(4x + 6) = 11 - (x + 7)
32x + 48 = 11 - x - 7
33x = - 44
x = - 4/3

Answer: x = - 4/3 or - 1 1/3

Proof:
8(4[- 4/3] + 6) = 11 - (- 4/3 + 7)
8(- 16/3 + 18/3) = 11 - (- 4/3 + 21/3)
8(2/3) = 11 - (17/3)
16/3 = 33/3 - 17/3
16/3 = 16/3
2008-10-20 11:20 am
32x + 48 = 11 - x + 7
33x = - 30
x = - 30 / 33
x = - 10 / 11
2008-10-19 11:31 am
8(4x + 6) = 11 - (x - 7)
8*4x + 8*6 = 11 - x + 7
32x + 48 = 18 - x
32x + x = 18 - 48
33x = -30
x = -30/33
x = -10/11
2008-10-19 11:20 am
I guess its
8(4x+6)=11 - (x+7).
It seems you forgot to press shift while using the key for + sign

anyways I'll solve considering what I think

8(4x + 6) = 11 - (x + 7)
or, 32x + 48 = 11 - x - 7
or, 32x + x = - 48 + 11 - 7
or, 33x = - 44
or, x = - 4/3
2008-10-19 11:16 am

CHECK YOUR QUESTION PLEASE ; CORRECT IT


I assume the question as
8(4x+6) = 11(x+7)
32x + 48 = 11x + 77
21x = 29
x = 29/21 = 1.3809523809523809523809523809524

2008-10-19 11:13 am
This is easy.But did you mean x+7, not x=7?
In any case...

8 * 4x = 32x
8 * 6 = 48

32x + 48 = 11 -(x + 7)

-1 * -x = -x
-1 * 7= -7

32x + 48 = 11 - 1x - 7

11 - 48 = -37

32x = -37 - 1x - 7

33x = -37 - 7

33x = -44

-44 / 33 = -4/3

x= -4/3
2008-10-19 11:10 am
I guess you typed the eq incorrect


收錄日期: 2021-05-01 11:23:05
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081019030421AAVhOKj

檢視 Wayback Machine 備份