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 - 5y + z = 12
x + 6y - z = -4
2x - 5y - 2z = -8 (4 points)
Answer

4x + y = 8
-17y = 0

2x - 11y = 16
4x + 7y = -16

-23y + 4z = 24
-17y = 0

13y - 2z = 24
7y - 4z = 0

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 - 5y + z = 12
x + 6y - z = -4
2x - 5y - 2z = -8 (4 points)
Answer
		
4x + y = 8
-17y = 0
		
2x - 11y = 16
4x + 7y = -16
		
-23y + 4z = 24
-17y = 0
		
13y - 2z = 24
7y - 4z = 0

fellowroot · Answer

if you have a TI 83. go to matrix, type it in only the coefficients not the variables. go to MATH and RREF and select the matrix. hit enter and it will solve it.

anonymous · Answer

wait what do i do ?

fellowroot · Answer

just type it in you cal and solve it.

anonymous · Answer

i only have the computer cal.