the value of k , so that x = 1 and y = 1 is solution of the equation 5 kx + 30 ky = 70
a. 2
b. 0
c. 1
d. - 2
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Answer:
5kx+30ky=70
5k(1)+30k(1)=70
5k+30k=70
35k=70
k=70/35
k =2
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