I believe the answer is the 3rd one
Meaning you don't have to solve the equation in a certain order just left to right in order to find the answer unlike division and subtraction
So based on place values, the One's place is occupied by 4. To round to this digit, you go one number to the right. If that number is 5 or higher, you add one to 4. If it is less than 5, you don't add any to 4. Since 7 is greater than 5, you add 1 to 4, giving you 5, since you can now remove all the other numbers to the right.
5.
X+2 < 7
Subtract both sides by 2
x < 5
Any value where x was less than 5 would be correct.