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 second equation.

3x + y + 2z = 1
x + 2y – z = –8
3x – y – 3z = 18

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 second equation.

3x + y + 2z = 1
x + 2y – z = –8
3x – y – 3z = 18

anonymous · Answer

A.)7y – z = 25
     5y – 6z = 42

B.) –5x – 5z = –10
    6x – z = 19

 C.)7x + 3z = –10
    –5z = 19

D.) –5y + 5z = 25
   –7y = 42

anonymous · Answer

so do you know how to isolate x in the second equation?

anonymous · Answer

@kbreezy102?