N (17+x) = 34x-r

I need to solve for x

The expression is N (17 + x) = 34 x - r

17N + Nx = 34 x - r

17N + r = 34x - Nx

17N + r = x (34-N)

x (34 - N) = 17N + r

x = (17N + r) / (34 - N)

if we know the value of N and r, then by putting those value on above equation we can solve and find the value of x.

there is another way also,

17N + r = 34x - Nx

17N + r - 34x + Nx = 0

now put 34x - Nx instead of 17N + r, then we get

34x - Nx - 34x + Nx = 0

so the solution to this equation could not be determined.