Question

What is the solution of this linear system?

3x + 5y = -1
2x − 5y = 16

Answer 1

.3x + 5y = -1
2x - 5y = 16

Add the two equations: 5x = 15 or x = 3
Substitute for x in the first equation: 3*3 + 5y = -1
15 + 5y = -1
5y = -10 so y = -10/5 = -2

The solution is (x, y) = (3, -2)

Answer 2

ahh thank you sooo much!!!

Answer 3

add the two equations yielding 5x=15 so x =3 then substitute into either equation to solve for y when you substitute you get y= -2

Answer 4

We have the linear system:
3x + 5y = -1
2x − 5y = 16

Okay, let's see if we can simplify any of the x or y terms.
an we can, see, on the first ecuation we have a +5y and on the second we have -5y.
If we sum up the ecuations, we'll en up having:
3x = -1
2x = 16
=
5x=15
Now, let's find X.

5x=15
x=15/5
x=3

Now that we have one of the values, let's take any of the two initial ecuations and replace it:
3x + 5y = -1 ; x=3

=> 3(3)-5y=-1
5y=-10
y=-10/5
y=-2.

And theree we have it. We have found the solution for the linear system.

Answer 5

thank you!!!!!!

Answer 6

You are very welcome! If you need any more help let me know , I will try my best to help you (:

Answer 7

i will for sure !thanks so much!

Answer 8

My pleasure.

Answer 9

*online

Answer 10

Post them on openstudy sweety. I suggest you delete your number. Don't post your personal information online! Close this question and keep posting questions you need help with.

Answer 11

okay