Which of the following steps would you perform to the system of equations below so that the equations have equal x-coefficients?
4x+2y = 4
12x+y = 22
A. Divide both sides of the bottom equation by 2
B. Multiply both sides of the top equation by 3
C. Multiply both sides of the bottom equation by 3
D. Divide both sides of the top equation by 3

B. Multiply both sides of the top equation by 3

Step-by-step explanation:

Given:

4x+2y = 4

12x+y = 22

For the equations to have equal x-coefficients, you'll multiply both sides of (1) by 3

4x+2y = 4 (1)

12x+y = 22 (2)

B. Multiply both sides of the top equation by 3

3(4x+2y=4)

We have,

12x+6y=12 (3)

12x+y=22 (2)

Subtract (2) from (3)

5y=12-22

5y=-10

y= -10/5

y=-2

Substitute y=-2 into (1)

4x+2y = 4

4x+2(-2)=4

4x-4=4

4x=4+4

4x=8

x=8/4

x=2

Therefore, y= -2 and x=2

a. she will receive a refund of $278.

step-by-step explanation: