Which of these strategies would eliminate a variable in the system of equations? \begin{cases} 6x + 5y = 1 6x - 5y = 7 \end{cases}
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6x+5y=1
6x−5y=7


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

(Choice A)
A
Subtract the bottom equation from the top equation.

(Choice B)
B
Add the equations.

(Choice C)
C
Multiply the top equation by 777, then subtract the bottom equation from the top equation.

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