Open study

is now brainly

With Brainly you can:

  • Get homework help from millions of students and moderators
  • Learn how to solve problems with step-by-step explanations
  • Share your knowledge and earn points by helping other students
  • Learn anywhere, anytime with the Brainly app!

A community for students.

Solving systems by substitution and elimination?

See more answers at
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Join Brainly to access

this expert answer


To see the expert answer you'll need to create a free account at Brainly

\[y = \frac{ 1 }{ 2 }x - 6\] 2x + 6y = 19
I know that answer is (11, -1/2) but I don't know how to solve it.
So, you know what y equals. If you see y in another equation can't you just plug it in?

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

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?
I will ask you a series of questions to help you solve this. Question 1: what does y equal?
Y does not equal -1/2 Read the first equation out loud and listen to what y is equal to.
1/2 - 6
If x = 25r + 25b Then x is equal twenty-five r plus twenty-five b.
Y = 1/2X - 6 There is no other answer. By writing y=1/2x-6 We say Y is equal to one half of x minus 6. There is nothing else that is the answer.
Question 2: If x = 5, what is y , if: x + 10 = y
x plus ten.
This is the substitution part, if you know that x is 5..... What is y?
Y would then be x+10=y 5+10=y 15=y
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=1/2x-6 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
So there's the way to solve for x. Once you get a numerical answer for x, you can solve for y.
Okay, so what do you do afterwards?
Did you solve for x?
Well, what I meant was do i combine 2x and 1/2x?
You need to distribute the 6 since it was 6y and then you can proceed with solving for x from there.
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
And you have just solved by substitution.
How do you go from 2x + 6(1/2x - 6) = 19 to 5x - 36 = 19?
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.
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.
I've done the other problems myself, its just that i didn't understand this one.
Distribution property is one of the earliest rules learned in algebra. If you can get from 2x + 6(1/2x-6) = 19 to 5x-36=19 well then there may be some necessary review:
Thank you.
What do you want?
I blocked you?
It doesn't say I did.
It doesn't say I blocked you. I have to go.

Not the answer you are looking for?

Search for more explanations.

Ask your own question