Question

What is x - 35 > 15

Answer 1

x-35>15 => x > 15+35 => x> 50 => x={51,52,53,...}

Answer 2

If you want to evaluate the x from the inequation x - 35 > 15, you have to add the number 35 on both sides of the inequation.
x - 35 > 15 /+35
x - 35 + 35 > 15 + 35
x + 0 > 50
x > 50

The answer is x > 50.