# Evaluate the expressions if r=2, s= 4, and t=6 How can I solve these problems 9/(3xs)+t and 4+t/(rx4s) Thank You

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Expert Answers

jeew-m | Certified Educator

We can do this by just substituting the values. But the important thing is the order of operations.

First we need to do the calculations inside the brackets. Then the division and then addition or subtraction.

`9/(3xxs)`

`= 9/(3xx4)`

`= 9/(12)`

`= (3xx3)/(3xx4)`

`=3/4`

`4+t/(rxx4s)`

`= 4+6/(2xx4xx4)`

`= 4+(2xx3)/(2xx4xx4)`

`= 4+3/16`

`= (16xx4+3)/16`

`= 67/4`