SOLUTION: Can someone help me, please? Consider the following linear system; 2x+3y=7 x+2y=8 , convert into augmented matrix form then solve by converting into row-echelon form.

Algebra ->  Matrices-and-determiminant -> SOLUTION: Can someone help me, please? Consider the following linear system; 2x+3y=7 x+2y=8 , convert into augmented matrix form then solve by converting into row-echelon form.      Log On


   

Question 963343: Can someone help me, please?
Consider the following linear system;
2x+3y=7
x+2y=8
, convert into augmented matrix form then solve by converting
into row-echelon form.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%28matrix%282%2C3%2C2%2C3%2C7%2C1%2C2%2C8%29%29
Divide first row by 2 and subtract from second row,
%28matrix%282%2C3%2C1%2C3%2F2%2C7%2F2%2C1%2C2%2C8%29%29
Subtract first row from second row,
%28matrix%282%2C3%2C1%2C3%2F2%2C7%2F2%2C0%2C1%2F2%2C9%2F2%29%29
Multiply second row by 2,
%28matrix%282%2C3%2C1%2C3%2F2%2C7%2F2%2C0%2C1%2C9%29%29
Multiply second row by -3/2 and add to first row,
%28matrix%282%2C3%2C1%2C0%2C-10%2C0%2C1%2C9%29%29
x=-10
y=9