In order to solve for , move to one side of the equation and everything else to the other. To do this, subtract from both sides.

In order to solve for , move to one side of the equation and everything else to the other. To do this, subtract from both sides.

In order to solve for , move to one side of the equation and everything else to the other. To do this, subtract from both sides.

In order to solve for , move to one side of the equation and everything else to the other. To do this, subtract from both sides.

Add 45 to both sides:

Add 45 to both sides:

Add 45 to both sides:

Remember, when there is a subtraction outside of a group, you should add the opposite of each member. That is:

That is a bit confusing, so let's simplify. When you add a negative, you subtract:

Now, group your like variables:

Finally, perform the subtractions and get:

Remember, when there is a subtraction outside of a group, you should add the opposite of each member. That is:

That is a bit confusing, so let's simplify. When you add a negative, you subtract:

Now, group your like variables:

Finally, perform the subtractions and get:

Remember, when there is a subtraction outside of a group, you should add the opposite of each member. That is:

That is a bit confusing, so let's simplify. When you add a negative, you subtract:

Now, group your like variables:

Finally, perform the subtractions and get: