1.

If x=k-1 and y=2k-1 is a solution of an equation of 3x+2y+7=0

Answer»

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Given, x = K – 1 and y = 2k – 1

3x + 2y + 7 = 0
3 ( k – 1 ) + 2 ( 2k – 1 ) + 7 = 0
3k – 3 + 4K – 2 + 7 = 0
7k + 2 = 0
7k = –2
k = –2/7
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