5x + 1 = 5x + n
n - any real number except 1
Examples:
n = 2
5x + 1 = 5x + 2 subtract 5x from both sides
1 = 2 FALSE -> NO SOLUTION
n = 0
5x + 1 = 5x + 0 subtract 5x from both sdies
1 = 0 FALSE -> NO SOLUTION
n = -4
5x + 1 = 5x + (-4) subtract 5x from both sides
1 = -4 FALSE -> NO SOLUTION
