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anonymous
 one year ago
What is the value of the x variable in the solution to the following system of equations?
2x + 2y = 6
x + 3y = −1
a. −2
b. 2
c. 5
d. −5
anonymous
 one year ago
What is the value of the x variable in the solution to the following system of equations? 2x + 2y = 6 x + 3y = −1 a. −2 b. 2 c. 5 d. −5

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can someone please walk me through how to do this

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2first equation times 3 and second equation times 2 (2x + 2y = 6) × 3 (x + 3y = −1) × (2) this will get you a new (but equivalent to the previous) system of equations. 6x + 6y = 18 2x  6y = 2 now add the equations and solve for x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So you just take one of the equations and multiply it to the other equation?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0first equation divide each term by 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Would it be x+y=6 then?

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2I didnàt multiply equation times equation, all I did is that I multiplied each term in the equation times some number.... i did this for both of the equations, and choose the numbers by which to multiply in a way that would eliminate the y (since the variable you need is x).

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So you would come up with 6x+6y= 18? for the first equation and 2x+6=2?

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.22x  6y = 2 for the second equation, you meant (right ?)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorry yes thats what I meant

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2yes, that is what you inded come up with.

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2Now, add the equations

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.26x + 6y = 18 2x  6y = 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay so it would be 4x + 18y = 20?

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2no, not 12. when you add 6 and 6 you get 6+(6)=66=0 and so when you add 6y and 6y you get (6y)+(6y)=??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh so it would be 4x = 20?

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2yes, that is correct!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you so much! That makes a lot more sense now!

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2very nice to hear that... you are welcome!

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439481250954:dw
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