If 2a-9=-85 what is the value of the variable

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

Hi, it is very simples.

Look:

2a - 9 = - 85

Pass the term - 9 to the left side of equation, but changing the sinal

2a = - 85 + 9

Sum - 85 + 9 = - 76

Then,

2a = - 76

Nos, pass the 2 dividing - 76

a = - 76 : 2

a = - 38

This is the answer to the yours question