For what value of k the pair of linear equations 2x-y=3 and 2kx+7y=5 has a unique solution of x=1 and y= -1
Answers
Answered by
4
a1/a2 =b1/b2 =c1/c2,that shows :-
2/2k = -1/7 = -3/-5
=> 2/2k = -1/7
=> 2*7 = 2k*-1
=>14= -2k
=> -k = 14/2
=> K= -7
2/2k = -1/7 = -3/-5
=> 2/2k = -1/7
=> 2*7 = 2k*-1
=>14= -2k
=> -k = 14/2
=> K= -7
Answered by
2
Answer:
Step-by-step explanation:
Sorry
Similar questions