The expression is .              

                (Replace x, y with 7and 3)

To simplify the expression follow the order of operations: (PEMDAS)

1.     Evaluate the expressions inside Brackets/Parenthesis (P).

2.     Evaluate Powers/Exponents (E).

3.     Multiply and/or Divide in order from left to right (MD).

4.     Add and/or Subtract in order from left to right (AS).

A simple technique for remembering the order pf operations is turned into phrase

“Please Excuse My Dear Aunty Sally”

In the given expression there are no grouping symbols.

First operation is multiplication.

                  (Multiply:)

              (Rewrite the expression as division expression)

Next operation is division

                       (Division: )

Next operation is addition

                              (Add:)

The value of The expression is 9.