Question

Will someone help me work this out plz.

Answer 1

A student is trying to solve the set of two equations given below:

Equation A: x + z = 6
Equation B: 3x + 2z = 1

Which of the following is a possible step used in eliminating the z-term?

Multiply equation A by −2.
Multiply equation B by 2.
Multiply equation A by 3.
Multiply equation B by 3.

Answer 2

Multiply equation A by −2.

Answer 3

when u multiply equation 1 by 2 it will give u -2z in the equation 1

Answer 4

harry: remember, you are helping another person solve this problem; you are NOT to solve the problem for him or her. We've been through this before.

Answer 5

you can than simply add equation 1 and 2 which will cancel z and leave a single equation in x

Answer 6

so is it -2x+-4=-12

Answer 7

-2x=-3

Answer 8

-2x -2 z = -12 equation 1 after multiplying it by 2

Answer 9

next you add these 2 equations
-2x -2 z = -12
+
3x + 2z = 1

=> x + 0 = -11
=> x = -11

Answer 10

put x =-11 in equation A, x + z = 6
-11 + z = 6
z = 17

Answer 11

I gotta go now @ladylauren @mathmale doesn't want me to help u anymore. LOL. bye.
I have to go sleep, n I had been issued warning by mathmale. So, bye.

Answer 12

bye.
:(

Answer 13

Now that you have the values of 2 of the variables, can you find the value of the third?

Answer 14

which variable?

Answer 15

is the answer multiply equation A by -2?

Answer 16

Yes, that's right. You could have stopped there. But glad you got additional practice. Please note I had NO objection to princeharry's helping you; but when he told you, falsely, that I didn't want him to help you, that was going too far.

Answer 17

ok thank you!!

Answer 18

Of course! Good luck.