3. Solve for x.

When we transpose x terms to one side and number terms to

the other it would be best to put the x terms on the right, because

there are more x's on the right.

Divide both sides by 2

or

Notice what would happen if we transposed the terms to the

other side.

In this case, we have a negative coefficient on the unknown.

When you divide both sides of an inequality by a negative number,

you need to turn the inequality sign around.

or

We see that the rules about changing the direction of an

inequality if you multiply or divide by a negative but keep it

pointing in the same direction if you are multiplying or dividing by a

positive is necessary to keep our results consistent if you do the

problem differently.