Question

@StudyGurl14 8x = 2y + 5
3x = y + 7
Solve the system of equations by substitution.
(-9/2, -41/2)
(-1, -9/2)
no solution
coincident

Answer 1

i dont get these at all

Answer 2

i think A or C

Answer 3

@Data_LG2 can u please help me

Answer 4

do elimination method. do you know how to do that?

8x = 2y + 5 -> eqn 1
3x = y + 7 -> eqn 2

I'll give you the steps, and i want you to show me that you are following it okay?

1. multiply eqn by -2 to eliminate y
2. add the new equation to eqn 1
3. simplify and solve for x

Answer 5

Sorry, I have to go. My mom’s yelling at me to get my own homework done.

Answer 6

what do you think

Answer 7

i dont know how to do any of this stuff

Answer 8

NOPE I AM DUM AT THIS STUFF

Answer 9

can someone just tell me the answer

Answer 10

I am going to give you the answer. This is how.
$$
8x = 2y + 5\\
3x = y + 7
$$
You see that last equation?

Answer 11

Add -7 to both sides. You will have the variable \(y\) alone on one side.

Take this equation for \(y\) and substitute it into the 1st equation. You will then have one equation with just the variable \(x\).

If you get this far you've almost mastered the technique of "substitution."

Let me know if you want more help.

Answer 12

thank u man

Answer 13

You're welcome