i think the best answer for this question is A)
Answer:
-1
This is because in negative the numbers the higher the number, the lower its value
Step-by-step explanation:
Answer: A
Step-by-step explanation:

Answer:The formula for a can be calculated by the following steps;
Step-by-step explanation:
-3a-a=4b-6b
-4a=-2b
cancelling the negative sign;
4a=2b
a=2b/4
a=b/2