Math

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.

(either b or c)

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  1. b would be used to eliminate x
    but
    you are supposed to eliminate z
    so
    c
    which would give you -4z+4z = 0

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