Answer:
X would be -4
Step-by-step explanation:
What you have to do is first look at the answer since it is -17 you have to figure out what plus 3 is equal to -17. From there you have to figure out what negative number times 5 would equal to -20. Since you need to add a positive 3 to it the number would need to be 3 more then -17. From there you try negative numbers.
5 x -1 + 3 = -2
5 x -2 + 3 = -7
5 x -3 + 3 = -12
5 x -4 + 3 = -17
Until you find the answer to it, which is -4.
You also would not start out at larger numbers then -1 in negatives since 5 is already close to -20 and whenever you times a positive to a negative it becomes a negative you wouldn't need a large negative number.
I hope this helps! Let me know if you need any further help with this question.