Please help and explain!! I don't get this.

The given equation is -4 +x +3 < -6
First you need to solve for X:
-4 +x +3 < -6
First add -4 and 3, which equals -1, so now the equation is:
x-1 <-6
Add 1 to each side:
x <-5
Now you have X and x<-5 is only part of the third answer, so the answer would be C.
The correct answer is C.
Step 1: Simplify both sides of the inequality.
x − 1 < −6
Step 2: Add 1 to both sides.
x − 1 + 1 < −6 + 1
x < −5