The determinant of 3 2 1 1 is

1 Answer

Alan P.

Feb 9, 2016

∣

∣

∣

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1

1

1

1

2

3

3

2

1

∣

∣

∣

∣

=

0

Explanation:

∣

∣

∣

∣

1

1

1

1

2

3

3

2

1

∣

∣

∣

∣

Step-by-step explanation:

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: