Please check work on 3 - 3(5 - x) = 0 (I get 3x = 12)

[taragbeh]

3-3(5-x)=0
1step I muliply to remove the bracket

3-15+3x=0
-12+3x=0(grouping)
3x=0+12 ( add 12 to both sides)
3x=12
x=4(divide bothe sides bt 3


Please advise if this correct

 

[stapel]

3-3(5-x)=0...

x=4

Please advise if this correct

As was explained and demonstrated in another of your recent threads, you can check your solution by plugging it back into the original equation. In this case, when you plugged "4" in for "x" in "3 - 3(5 - x)", did you get "0"?

Eliz.

 

[taragbeh]

Re:

...you can check your solution by plugging it back into the original equation. In this case, when you plugged "4" in for "x" in "3 - 3(5 - x)", did you get "0"?

Does all the equations have to equal? This questions came under the topic Indenties, conditional equations and inconsistent equation

 

[tkhunny]

Re: Re:

Does all the equations have to equal?

It appears you have not had it pounded into your head that "=" means "=". What else would it mean?

Before you think you are done, CHECK you answers in the ORIGINAL equation. In this way, you can verify for yourself and gain confidence.

 

[taragbeh]

Re: Re:

3-3(5-4)=0

3-15+12=0

Why would you do that?

3 - 3(5-4) = 3 - 3(1) = 3-3 = 0 -- Much easier.

therefore -12+12 = 0
0=0

So you guys are confusing me right now, because x= 4

Isn't zero = zero? This seems a good result. Where is the confusing part? You were to find a value of x for which the given expression is zero. You have done that. Quit and move on to the next problem.

 

[taragbeh]

Re: Please help on Equations

Thanks y'all for the help