Solve a matrices system problem

label Algebra
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Use matrices to solve the system 

2x + 3y = 4 

5x + 8y = 11

May 29th, 2015

[2  3       ]     [x  ] =  4

[5   8      ]      [  y ]   =  11

get the determinate which is 8*2 -3*5 =1

1/1 [  8      3]     [ 4]

     [   5       2]    [ 11]

= 8*4+3*11= 65

5*4+2*11=     42

x=65

Y= 42

May 29th, 2015

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May 29th, 2015
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May 29th, 2015
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