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 first equation.

x + 6y + z = 2
x – 3y + 2z = –1
x + 5y + 3z = –4

11y + 4z = 6
2y + 5z = 3

y – 2z = 6
–8y – z = 3

3y + 3z = –3
11y + 4z = –6

–9y + z = –3
–y + 2z = –6

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 first equation.

x + 6y + z = 2
x – 3y + 2z = –1
x + 5y + 3z = –4

11y + 4z = 6
2y + 5z = 3

y – 2z = 6
–8y – z = 3

3y + 3z = –3
11y + 4z = –6

–9y + z = –3
–y + 2z = –6

amistre64 · Answer

what do you get when you isolate for x in the first equation?

anonymous · Answer

-6y - z + 2

amistre64 · Answer

good

lets replace x in the next equation by that

x – 3y + 2z = –1

-6y - z + 2 – 3y + 2z = –1

when you collect like terms, i see only one answer that has this result