The answer is 8. This is because when you substitute 8 with “a” you then solve the problem to see if it is equal to the answer. -4+8=4... -4+4=0 so that is wrong and -4+O=-4 which is also incorrect.
The anwser is 9.8333333333
What kind of problems or what are you trying to ask?
Answer:
Simplified: 0.024
Step-by-step explanation: