Easy way to compare values of more than 3 variables?

Question

I want to check whether these variables have same values.

EXAMPLE:

int a = 5;
int b = 5;
int c = 5;
int d = 5;
int e = 5;
. . .
int k = 5;

if(a==b && b==c && c==d && d==e && .... && j==k)  
{
   //this is Complex way and not well understandable.
}

Any easy way to Compare all are same?
LIKE in below example

if(a==b==c==d==e.....j==k)
{
    //Understandable but not work 
}

Answer 1

how about something like this:

if (Array.TrueForAll<int>(new int[] {a, b, c, d, e, f, g, h, i, j, k },
        val => (a == val))) {
    // do something
}