-2k=13 k+m=8

To solve the first equation, you need to isolate the variable "k". Let's do it step by step:

-2k = 13

First, divide both sides of the equation by -2 to isolate "k":

(-2k) / -2 = 13 / -2

k = -13/2

So the value of k is -13/2.

Now let's move on to the second equation.

k + m = 8

Since we already know the value of "k" from the first equation, substitute it into the second equation:

(-13/2) + m = 8

To solve for "m", you need to isolate it. Begin by adding 13/2 to both sides of the equation:

(-13/2) + 13/2 + m = 8 + 13/2

m = 8 + 13/2

m = 16/2 + 13/2

m = 29/2

So the value of m is 29/2.