18 + m = n

This equation cannot be solved as we don't have enough information.

solve for m

18 + m = n

To solve for m, we need to isolate it on one side of the equation. We can do this by subtracting 18 from both sides:

18 + m - 18 = n - 18

m = n - 18

So, m = n - 18.

solve for x r = x - h

To solve for x, we need to isolate it on one side of the equation. We can do this by adding h to both sides:

r + h = x - h + h

r + h = x

So, x = r + h.

solve for y.

y-8=c

To solve for y, we need to isolate it on one side of the equation. We can do this by adding 8 to both sides:

y - 8 + 8 = c + 8

y = c + 8

So, y = c + 8.