solution/ a=-38. Since its a subtraction problem you need to add. -9 + 9 cancels each other out which takes u back to 2a. next you have to add -9 + -85 which gives you -94. Now you have 2a = -94 and 2 divided by 94 gives you -38, and 2a cancels out so all u have left is "a" which gives you ur answer a=-38
