kdav9988 kdav9988

12-07-2016
Mathematics

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Solve 7x + 5y = 14 using matrices.
4x + 3y = 9

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trankieuoanh164 trankieuoanh164

12-07-2016

28x+20y =14*4 = 56
28x + 21y = 9*7 =56
=> y=0, x = 2

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