Question

If X=-1and y=2is a solution of k X+3y=7find the value of k

Answer 1

$k( - 1) + 3(2) = 7$

$- 1k + 6 = 7$

$- 1k = 1$

$k = - 1$

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Answer 2

Answer:

kX+3y =7

kX=7-3(2)

kX=7 -6

k-1=+1

K=1+1

K=2

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