For what value of k the linear equation 2x+ky=8 has x=2 and y=1
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Let us put the values
2(2)+k(1)=8
4+k=8
k=8-4
k=4
Let us check
2(2)+4(1)=8
4+4=8
8=8
LHS=RHS
Therefore our answer is correct
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