HELPPP! PLEASE

Just B

Consider the system of equations.

2x + 6y = -4

x - 2y = 18

(a) Dean rewrote the second equation as 3x – 6y = 54. What justification did he have for doing this?

(b) Dean combined the equation in Part (a) with the first equation in the system to get x = 10. Explain why Dean was justified in doing this.

(c) What is the solution of the system?

Question

HELPPP! PLEASE

 Just B

Consider the system of equations.

2x  +  6y  =  -4

x  -  2y  = 18

(a) Dean rewrote the second equation as 3x – 6y = 54. What justification did he have for doing this?

(b) Dean combined the equation in Part (a) with the first equation in the system to get x = 10. Explain why Dean was justified in doing this.

(c) What is the solution of the system?

anonymous · Answer

@freckles

anonymous · Answer

@AravindG

aravindg · Answer

He did that to do the elimination method. I discussed a similar problem a few minutes ago. Can you check it?

aravindg · Answer

http://openstudy.com/study#/updates/56aae513e4b04653dfc1bb73