A community for students.
Here's the question you clicked on:
 0 viewing
BioHazard9064
 one year ago
Please help Im stuck on the last one.
Solve for x: 2 over 5 (x  4) = 2x.
BioHazard9064
 one year ago
Please help Im stuck on the last one. Solve for x: 2 over 5 (x  4) = 2x.

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{2}{5}(x4) = 2x\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Step : 1  Multiply by 5 both the sides first.. Step : 2  Then divide by 2 both the sides.. Step : 3  Then, subtract \(x\) from both the sides. Step : 4  Then, divide by 4 both the sides. Finally, you will get the value of \(x\)..

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0so multiply 2 over 5 by 5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes.. What you got after step 1?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Just do it, if you are wrong, I will correct, now try, don't hesitate..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can't you cancel 5 with 5 there?

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0oh the 5 cancels that 5 leaving me with 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{2}{5}(x4) \times 5 = 2x \times 5 \\ \frac{2}{\cancel{5}}(x4) \times \cancel{5} = 10x \\ 2(x4) = 10x\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This is what you get after step 1.. Now what you get after step 2??

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0then I divide by 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wow, superb..!! :) Now (x4) you can write it as : x  4, without brackets too, no harm...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Now, subtract \(x\) from both sides which is our 3rd step. Do it..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0LHS is 4.. that is only good, what about RHS?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[x  4 \color{red}{ x} = 5x \color{red}{x} \\ \cancel{x}  4 \color{red}{\cancel{x}} = 5x \color{red}{ x} \\ 4 = 5x \color{red}{ x}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Now tell me what is \(5xx\) = ??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I tell you by one more method.. Okay, take \(x =2\), now \(5x = 5 \times 2 = 10\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Is this good? I have taken the value of x = 2, x is any number there, it is variable, it can take any value, so I took its value as 2 just as an example...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\(5x\) means \(5 \times x\) that is 5 is multiplied with \(x\)..

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0sorry my computer froze and reset

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0so it pasted my last message

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0If I take x = 2, then \(5x\) becomes \(5 \times x = 5 \times 2 = 10\), this you got?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So, you have : dw:1437505195878:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You are getting how I got \(5xx\) = 4x ??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Or you can do it by distributive property too.. \[5x  x\] Take \(x\) common from both: \[5x  x \\ 5x  1x\\x(51) \\ x (4) \\ 4x\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0See, if have \(xx\), then you will cancel that, if you have \(2x2x\), then also you can cancel, both the terms should be same.. But here one is 5x and other is simply x, so it is quite risky to cancel it and get 0 marks for your answer..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So are you clear how we got 4x ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Coming back to our original question: We reached: \[4 = 5x  x \\ 4 = 4x\] This is what we got after step 3. Now do step 4..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do it properly, what you got on Left Side?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0See, an equation has two sides and = sign in between, so write them fully when you are writing: So after 4th step you get: \[1 = 1x \\ 1 = x \\ .. \\ \color{green}{x = 1}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Don't forget the x you are having on right side, why are you not considering x there?

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0Would the answer be 1

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[4 = 4x \\ \text{Divide by 4 :} \\ \frac{\cancel4}{\color{red}{\cancel{4}}} = \frac{\cancel{4}x}{\color{red}{\cancel{4}}} \\ 1 = x\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The value of \(x\) is \(1\)..

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0Thank you for helping me to understand and not just giving me the answer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It is okay buddy, we are here to learn and get learned... :)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.