Question

What is the value of x in the solution to this system of equations?

4x+y=18
x=15−2y

A. 2

B. 3

C. 4

D. 6

Answer 1

Explanation:

(1 point)

No, there isn't a more efficient way to solve this system.

Yes, a more efficient way is to multiply the first equation by 4, add to eliminate y, then solve for x.

Yes, a more efficient way is to multiply the first equation by −4, add to eliminate y, then solve for x.

Yes, a more efficient way is to multiply the first equation by −4, add to eliminate x, then solve for y.