Question

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

Equation P: y + z = 6
Equation Q: 8y + 7z = 1

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

(y + z = 6) ⋅ −8
(y + z = 6) ⋅ 7
(8y + 7z = 1) ⋅ 7
(8y + 7z = 1) ⋅ 8

Answer 1

@Nnesha

Answer 2

D

Answer 3

to eliminate y you should have same number but opposite signs
so 2nd equation is 8y +7z=1
what you should multiply first equation to get opposite same number ?

Answer 4

hmm nice good luck

Answer 5

don't forget to ask me what you got it wrong :-)