Answer:
x = -8
Step-by-step explanation:
Subtract 9 from each side
-x = 8
Divide each side by -1 to get rid of the negative in x
-8
9-x=17
-x=17-9
-x=8
cheak
9-(-8)= 17
negative ×negative = positive
8+9 = 17
17=17
