A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
I have 7z  3x = 18
2z = 1 + 5x
And now I dk what to do
anonymous
 5 years ago
I have 7z  3x = 18 2z = 1 + 5x And now I dk what to do

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The is a literal equation with substitution I flipped the 2z = 1 + 5x It was originally 2z  5x = 1

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1divide by 2 to get z alone

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I divide what by two?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.12z = 1 + 5x ; z = (1/2) +(5/2)x 2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What about the first equation?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1you sub the z value into it and solve for x

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.17z  3x = 18 7((1/2)+(5/2)x)  3x = 18

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.17((1/2)+(5/2)x)  3x = 18 (2) 7(1+5x)  6x = 36

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ugh. Now I should have known that!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1i goofed that answer but you see it lol

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Doesn't it get multiplied by 2 also?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.17+35x 6x = 36 29x = 29 ..... x=1; lol thats a coincidents

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1lets focus on that part and see what I did ok?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.11+5x 7(  ) times 2 = 7(1+5x) 2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0How do I find the Y again?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Because I am confused about that bit right know?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1ok... do you see why when we mulitply by 2 we get 7(1+5x) tho?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1then lets solve for x: 7+35x 6x = 36 ; 7 and add like terms 77+35x 6x = 367 29x = 29 x = 1 right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yes I have the much of the problem solved :D

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.12z = 1 + 5x 2z = 1+5 2z = 6 z = 3

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Finally the problem is finished :D

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1once you know what x is....use it lol

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Thks again!!!!!!!!!!!!!!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The problem looks like this 7z  3x = 18 2z  5x = 1 changes to 2z = 1 + 5x Then I divide 2z by 2 to get 7z  3x = 18 z = 1/2 5x/2 which turns to 7(1/2) 5x/2)  3x = 18 which turns to 7 + 35x 6x = 36 which turns to 7 + 29x = 36 which turns to 29x = 29 then x = 1 then 2z = 1 + 5 (1) 2z = 1 + 5 2z = 6 z = 3 (1,3)
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.