Assuming that you mean "simplified form", we have to cancel every common divisor of both numerator and denumerator.
36 is factored as
![2^2\cdot 3^2](https://img.qammunity.org/2021/formulas/mathematics/middle-school/f3xt3m000poy1nh51renxe7oh8ckkf8yjn.png)
34 is factored as
![2\cdot 17](https://img.qammunity.org/2021/formulas/mathematics/middle-school/xfb8j6ciryog24y4yxf6e08yo8pzkhz1iu.png)
So, the two numbers only have a factor 2 in common, meaning that the simplified form of this fraction is
![-(18)/(17)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/ui0vp57a9r1t30pofebyeav1wiaew8tpqy.png)