Benjamin spent on his living expenses last year.

Most of these expenses are listed at the right.

Benjamins only other expense last year was rent.

He paid rent times last year.

Find how much is Benjamins rent each month.

Let be the cost of rent each month.

       (Original equation)

                                    (Add: )

           (Subtract from each side)

                                    (Apply additive inverse property: )

                                                   (Subtract: )

                                              (Divide each side by )

                                                            (Cancel common terms)

Therefore, cost of rent each month.

cost of rent each month.