Question

Part 1:
Solve the following system of equations. Please show your work to receive full credit.
x - y = 13
2x + y = 2

Part 2:
Explain which method you chose to solve the system and why you felt it was the best choice.

@Compassionate

Answer 1

I don't get it.

Answer 2

Do you prefer elimination or substitution?

Answer 3

Substitution is putting in different numbers to see if they work right?

Answer 4

No. Substitution is getting a name for x or y from one equation and putting it into the other equation.

Answer 5

Sure, that sounds easier.

Answer 6

Elimination is easier in this case, Mertsj. I think she should understand how to work both the equations because they both have their perks.

Answer 7

Then solve the top equation for x by adding y to both sides.

Answer 8

@Compassionate This is America. You have a right to be wrong.

Answer 9

What did you get, @unheard

Answer 10

I'm soooo confused.

Answer 11

You may live in America, but I'm a German-American.

You have the right to be right here. Being wrong is not an option.

Answer 12

I am trying to figure out why you can't add y to both sides of an equation. I am going to post another equation. I want you to add 4 to both sides of this equation so I can see what the problem is.

Answer 13

Copy that drawing and add 4 to both sides.

Answer 14

I'm a visual learner. It's easier if I see what I have to do, I think. And okay, I will.

Answer 15

x=15

Answer 16

I want to see the actual adding 4 to both sides. You could easily figure out that x is 15 without actually adding 4 to both sides.

Answer 17

Copy the drawing and add 4 to both sides.