Question

So I’m doing homework at the moment and I’m not sure how to solve this equation. I tried many different ways to solve this but I can’t seem to end up with the answer my teacher provided.

Answer 1

`\begin{gathered} (-1)(2)/(38)+(-1)(18)/(38)+(1)(18)/(38)=-(2)/(38)-(18)/(38)+(18)/(38) \\ -(2)/(38)-(18)/(38)+(18)/(38)=(18-18-2)/(38) \\ (18-18-2)/(38)=(-2)/(38) \\ (-2)/(38)=-(1)/(19)\approx-0.053 \end{gathered}`