Question

For all real values of C , the pair of equation x - 2y = 8 , 5x + 10y = C has a unique solution.

Answer 1

Answer:

40

Step-by-step explanation:

x-2y=8

5x-10y=c

5 (x-2y)=c

5×8=c

c=40

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Answer 2

Ans -40
Here is the solution
X-2y=8------equation (1)
5x+ 10y=c
-5(x-2y)=c
Putting value of x-2y=8 from equation(1)
-5*8=c
Or c=-5*8
C=-40