6x + 9 = 2x + 7 . Find x ? Help Please!?

2008-11-06 3:01 pm
Quick Reply please !! Tha

回答 (11)

2008-11-06 3:05 pm
✔ 最佳答案
Do opposite function of the know number so if

6x + 9 = 2x + 7
6x + 2 = 2x
2 = -4x
x = -(1/2)
2008-11-06 11:09 pm
6x + 9 = 2x + 7

minus 2x both sides so

4x + 9 = 7

minus 9 both sides so

4x = -2

divide by 4 both sides so

x = -1/2
2008-11-06 11:05 pm
-.5
2008-11-10 10:00 pm
4x = - 2
x = - 1/2
2008-11-07 2:45 am
Bring like terms onto one side
6x-2x=7-9
simplify
4x= -2
divide both sides of the equation by 4
4x/4= -2/4
simplify
x= -1/2 (which in decimal figures is -0.5)
參考: This has been my fodder since early secondary education when I used New General Mathematics Books 1-4
2008-11-06 11:57 pm
all the above answers are correct.......

6x+9 = 2x+7
6x-2x = 7-9
4x = -2
x = -2/4
x = -0.5
2008-11-06 11:54 pm
6x+9 = 2x+7
6x-2x = 7-9
4x = -2
x = -2/4
x = -1/2

this is elementary math, right?
2008-11-06 11:36 pm
6x + 9 = 2x + 7
6x - 2x = -9 + 7
4x = -2
x = -2/4
x = -1/2 (-0.5)
2008-11-06 11:20 pm
I know a source of your answer.
2008-11-06 11:06 pm
6x + 9 = 2x + 7
6x - 2x = 7 - 9
4x = -2
x = -2/4
x = -1/2


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