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6 August, 23:29

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

Equation A: x + z = 6

Equation B: 4x + 5z = 1

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

Multiply equation B by 5.

Multiply equation A by - 5.

Multiply equation A by 4.

Multiply equation B by 4

+4
Answers (1)
  1. 7 August, 03:14
    0
    Multiply equation A by - 5.

    Once this is done you can add equation A to equation B and see that we are adding - 5z to 5z, resulting in the value 0.
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