SOLUTION: What is the value of x and y in these two matrice problem? Please, show the steps, so I can see how it is done. 1. [3x 4] = [-9x + y] 2. [x + 8 5] [38 -5] [3

Algebra ->  Matrices-and-determiminant -> SOLUTION: What is the value of x and y in these two matrice problem? Please, show the steps, so I can see how it is done. 1. [3x 4] = [-9x + y] 2. [x + 8 5] [38 -5] [3      Log On


   

Question 899086: What is the value of x and y in these two matrice problem? Please, show the steps, so I can see how it is done.
1. [3x 4] = [-9x + y]

2. [x + 8 5] [38 -5]
[3 -y] = [3 4y - 10]
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.The left matrix has two elements (3x,4) and the right matrix has one element (-9x+y). The number of elements must match.
.
.
.
2.
%28matrix%282%2C2%2Cx%2B8%2C5%2C4%2C-y%29%29=%28matrix%282%2C2%2C38%2C-5%2C3%2C4y-10%29%29
First row, second column elements don't match. They must.
x%2B8=38
x=30
.
.
-y=4y-10
-5y=-10
y=2