Answer :
Step-by-step explanation:
-143 = -11x : Original problem
[tex]\frac{-143}{-11}[/tex] = [tex]\frac{-11x}{-11}[/tex] : Isolating the variable
13 = x : Simplification (Note: when you divide a negative number by a negative number, the answer is positive)
Answer: x=13
Hope this helps!!!