Cramer's rule. Class ten. Optional mathematics

solve using the matrix method. class ten, optional mathematics

Solve the given equation using the matrix method. a. x+y = 5 x-y= 1 ( 2,3) b) 2x + 3y = 7 X+ y = 3 (2,1)  c) x + y = 9 2x - y = 3 ( 4,5)

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