Question

please hurry i need help 24 points i just put just help!!!!!!!!Which is the best first step when solving the following system of equations? 5 c + 4 d = 10. 3 c + 2 d = 16. Multiply the first equation by Negative 2. Solve for d in the second equation. Solve for c in the first equation. Multiply the second equation by Negative 2.

Answer 1

Multiply the second equation by Negative 2.

Explanation:

5c + 4d = 10

3c + 2d = 16

5c + 4d = 10

-6c - 4d = -32

-c = -22

c = 22

Answer 2

Multiply the second equation by Negative 2.

Explanation:

5 c + 4 d = 10.

3 c + 2 d = 16.

I would multiply the second equation by -2 so that the coefficient for d is the opposite in each equation. That way we can add the two equations together and eliminate d.

5 c + 4 d = 10.

-6 c + -4 d = -32

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-c = -22