Question

Which of these strategies would eliminate a variable in the system of equations? ​8x+8y=2 8x+5y=1 ​ Add the equations. (Choice B) B Subtract the bottom equation from the top equation. (Choice C) C Multiply the top equation by 1/2,then subtract the bottom equation from the top equation.

Answer 1

Subtract the bottom equation from the top equation.

Explanation:

i made sure it was the answer which is in khan academy.

Answer 2

B. Subtract the bottom equation from the top equation.

Explanation:

When looking at the two equations:

8x + 8y = 2

8x + 5y = 1

We can easily get rid of the x variable by subtracting the two equations from each other since the terms are equivalent. This would allow us to solve for the y value, which we could plug into the an equation to solve for the x value.