If you were to use the substitution method to solve the following system, choose the new system of equations that would result if x was isolated in the third equation.

2x – 3y + z = –4
2x – 2y + z = –1
x – 2y + 3z = –6

A. 5x + 7y = 6
y – 4 = –1

B. –y – 1 = –4
–5x + 4y = –3

C. y – 5z = 8
2y – 5z = 11

D.–7y + 7z = 8
–6y + 7z = 11

Question

If you were to use the substitution method to solve the following system, choose the new system of equations that would result if x was isolated in the third equation.

2x – 3y + z = –4 
2x – 2y + z = –1 
x – 2y + 3z = –6

A. 5x + 7y = 6 
y – 4 = –1

B. –y – 1 = –4 
–5x + 4y = –3

C. y – 5z = 8 
2y – 5z = 11

D.–7y + 7z = 8 
–6y + 7z = 11

slaaibak · Answer

from the third equation: x = 2y - 3z - 6

now substitute this in the first two equations

anonymous · Answer

what?