Question

Find the sum of all positive whole numbers x such that 2x-7 < 21.

Answer 1

The numbers can be 1,2,3,4,5,6,7,8,9, or 10 those are the best answer

Answer 2

9 < x. So any numbers less than nine would be the answer. But it says that any positive numbers so; 1,2,3,4,5,67 and 8 are your answers