6. 7 6 a The inverse of Use it to solve the following system of equations. 7х+ 6у 3D - 5 ах + ay %3D-2а x-D y = (Simplify your answers.)

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A: Using Elimination by multiplication method.

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Q: [ [5/2 -3/2] -3 2 8. Use the inverse A- to solve the system 3r + 4y = 3 5.x + 6y = 7.

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A: A-1A =AA-1 =I ; where , A is the invertible matrix. A-1=1AadjA

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Q: (2) A certain brand of tea bags comes in packages of 5, 10, and 20 sachets, costing $5,$9, and $15…

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A: The given system of equation are

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A: Given : 2x - 3y = 182x + 3y = -6

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