Question

Which of these strategies would eliminate a variable in the system of equations?

2x + 8y = -3
3x + 6y = -4

Choose all answers that apply:

A) Multiply the top equation by - 4, multiply the bottom equation by 3, then add the equations.

B) Multiply the top equation by 3, multiply the bottom equation by 4, then subtract the bottom
equation from the top equation.

C) Multiply the top equation by 3, multiply the bottom equation by -2, then add the equations.

Answer 1

C because it is c and smport

Answer 2

Answer: C)

Explanation:

$C) \ \oplus \displaystyle \left \{ {{2x+8y=-3} \ \ \ \ | \cdot3 \atop {3x+6y=-4}\ | \cdot( -2)} \right. => \\\\\\\ \boldsymbol{6x}+24y-\boldsymbol{6x}-12=-9-8 \\\\ 24y-12=-17$

It can be noticed that we got rid of x ; from which proceeding

Answer: C)