SOLUTION: i need help solving the Matrix system using lines equation 1 -9/2 3/2 9 8 2 using -9r1+r2 (neg9 times row1 plus row 2) HOW IN GODS NAME DID THEY GET 1 -9/

Question 354066: i need help solving the Matrix system using lines equation
1 -9/2 3/2
9 8 2
using -9r1+r2 (neg9 times row1 plus row 2)
HOW IN GODS NAME DID THEY GET
1 -9/2 3/2
0 97/2 -23/2

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
1 -9/2 3/2
9 8 2
using -9r1+r2 (neg9 times row1 plus row 2)
HOW IN GODS NAME DID THEY GET
1 -9/2 3/2
0 97/2 -23/2
--------------
-9*r1 --> -9 81/2 -27/2
Adding that to row 2 gives the result above
--------------
PS God isn't good at math. Fact is, god's a moron.

RELATED QUESTIONS
What is the next step in solving this augmented matrix using the Gauss-Jordan elimination (answered by ikleyn)

Please solve the system of equation for all variables using a matrix. {{{-2x+y=-4}}}... (answered by stanbon,budge)

Solve this equation using matrices. 2x-3y+z=5 x+3y+8z=22 3x-y+2z=12 I have already... (answered by rwm)

i need help with this Matrix 1 5 | 2 6 | x 1/2 R2 into R2 so I need to multiply... (answered by rothauserc)

Help! I don't know if I'm doing this right. Use the matrix method. x+y-z = -9... (answered by stanbon)

Gauss Jordan...Please Help A system of three linear equations in the variables x,y and (answered by fractalier)

Please help solve the following. The instructions read "Solve each system by... (answered by jim_thompson5910)

Hi! I have a question about solving systems using inverse matrix. (x) (-2 (answered by jim_thompson5910)

I have a 4 by 4 system of equation that I'm trying to solve using a matrix. I'm very... (answered by jim_thompson5910)