Question

If (-2,-1) is one solution of 5kx+2y=30 then value of k is?

Answer 1

Answer:

-3.2

Step-by-step explanation:

(-2,-1) is the solution means, x= -2, y= -1

5(k)(-2)+2(-1)=30

-10k-2=30

-10k=32

k=-32/10 = -3.2

Answer 2

x=-2,y=-1

Then,

5k(-2)+2(-1)=30

-10k+(-2)=30

-10k-2=30

-10k=30+2

-10k=32

k=32/-10

k=-3.2

Value of k=-3.2

Step-by-step explanation: