SOLUTION: Please help me solve 2X plus 5Y equals 145 and X plus Y equals 50 matrix

SOLUTION: Please help me solve 2X plus 5Y equals 145 and X plus Y equals 50 matrix

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Question 914755: Please help me solve 2X plus 5Y equals 145 and X plus Y equals 50 matrix
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
STEP 1:
Find coefficient matrix (D), X matrix (Dx) and Y matrix (Dy). In this example we have.
D =

Dx=

Dy=

STEP 2:
Find determinants for D, Dx and Dy.
det D= =

det Dx= ==

det Dy= = =
STEP 3:
Solve for the and

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