15a =6a - 90
Move all the numbers with variables to one side
15a - (6a) = 6a -(6a) -90
9a = -90
9a/9 = -90/9
a = -9
Hope this helps
Answer:
D
Step-by-step explanation:
The answer is B. Use distance formula...
Answer:
ion know
Step-by-step explanation: