Question

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

Equation A: x + z = 6
Equation B: 2x + 4z = 1

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

Multiply equation B by 4.

Multiply equation A by 2.

Multiply equation A by −4.

Multiply equation B by 2.

Answer 1

Multiply equation A by −4.

Explanation:

got 100%

Answer 2

Multiply equation A by 2. x+z=6 If you replace the z with the 2, you can add whatever the amount x is to get 6!