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

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

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

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

Question

A student is trying to solve the set of two equations given below:

Equation A: x + z = 6
Equation B: 2x + 3z = 1

Which of the following is a possible step used in eliminating the z-term?

 Multiply equation B by 3.
 Multiply equation A by 2.
 Multiply equation B by 2.
 Multiply equation A by −3.

anonymous · Answer

@LegendarySadist

anonymous · Answer

Make the top z equal to the negative of the bottom z.

sachintha · Answer

Raise the coefficient of z so that it will have a negative value with the same magnitude of z in B.

anonymous · Answer

well I have done the work would it be A @LegendarySadist

anonymous · Answer

bc im not sure

anonymous · Answer

No, it would not

sachintha · Answer

@LegendarySadist There are two answers. Isn't it?

sachintha · Answer

Sorry one :)

anonymous · Answer

Well there would be 2 if we could use addition OR subtraction and weren't going specifically for the z term. But for the z term, there's only one, yeah.

sachintha · Answer

It would have two answers if it was like this,
 Multiply equation A by 3. :D

anonymous · Answer

its -3