Which of these strategies would eliminate a variable in the system of equations?
{
−
x
+
6
y
=
8
7
x
−
y
=
−
2

⎩
⎪
⎪
⎨
⎪
⎪
⎧


−x+6y=8
7x−y=−2


Choose all answers that apply:
Choose all answers that apply:

could you give more information?

answer: a

step-by-step explanation:

if xy ~ yz therefore xy would be the same length as yz

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