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ValentinaTBest ResponseYou've already chosen the best response.1
\[y = \frac{ 1 }{ 2 }x  6\] 2x + 6y = 19
 one year ago

ValentinaTBest ResponseYou've already chosen the best response.1
I know that answer is (11, 1/2) but I don't know how to solve it.
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
So, you know what y equals. If you see y in another equation can't you just plug it in?
 one year ago

ValentinaTBest ResponseYou've already chosen the best response.1
What I meant is that, someone told me the answer, but not how they got it. Could you explain to me how they would have got (11, 1/2) as the answer?
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
I will ask you a series of questions to help you solve this. Question 1: what does y equal?
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
Y does not equal 1/2 Read the first equation out loud and listen to what y is equal to.
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
If x = 25r + 25b Then x is equal twentyfive r plus twentyfive b.
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
Y = 1/2X  6 There is no other answer. By writing y=1/2x6 We say Y is equal to one half of x minus 6. There is nothing else that is the answer.
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
Question 2: If x = 5, what is y , if: x + 10 = y
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
This is the substitution part, if you know that x is 5..... What is y?
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
Y would then be x+10=y 5+10=y 15=y
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
Now that's just a basic use of substitution. Let's go back to your problem(s) You know what y is equal to y=1/2x6 So then you look at the other equation 2x + 6y = 19 and say Well if i know what y is, I can replace it with the y there. So 2x + 6y = 19 turns into 2x + 6(1/2x  6) = 19
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
So there's the way to solve for x. Once you get a numerical answer for x, you can solve for y.
 one year ago

ValentinaTBest ResponseYou've already chosen the best response.1
Okay, so what do you do afterwards?
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
Did you solve for x?
 one year ago

ValentinaTBest ResponseYou've already chosen the best response.1
Well, what I meant was do i combine 2x and 1/2x?
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
You need to distribute the 6 since it was 6y and then you can proceed with solving for x from there.
 one year ago

ValentinaTBest ResponseYou've already chosen the best response.1
5x  36 = 19 5x = 55 x = 11 Replace x in one of the equations. y = 1/2(11)  6 y = 5.5  6 y = 1/2
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
And you have just solved by substitution.
 one year ago

ValentinaTBest ResponseYou've already chosen the best response.1
How do you go from 2x + 6(1/2x  6) = 19 to 5x  36 = 19?
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
6 times 1/2x equals 3x and 6 times 6 equals 36 You may need to go back and review some algebra. It would help tremendously and I do not see another way for you to continue in mathematics without it.
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
I am going to link you to some pages. Please study them and use them and I suggest understanding these concepts before continuing your homeworkl.
 one year ago

ValentinaTBest ResponseYou've already chosen the best response.1
I've done the other problems myself, its just that i didn't understand this one.
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
Distribution property is one of the earliest rules learned in algebra. If you can get from 2x + 6(1/2x6) = 19 to 5x36=19 well then there may be some necessary review:
 one year ago

cgreenwade2000Best ResponseYou've already chosen the best response.1
http://www.worksheetworks.com/math/prealgebra/equationsliketermsdistributive.html
 one year ago

ValentinaTBest ResponseYou've already chosen the best response.1
It doesn't say I did.
 one year ago

ValentinaTBest ResponseYou've already chosen the best response.1
It doesn't say I blocked you. I have to go.
 one year ago
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