ANSWER
-2r
EXPLANATION
We want to find the simplified form of:
[tex]\mleft(4r-s\mright)-\mleft(r+2s\mright)-\mleft(5r-3s\mright)[/tex]To do this, we have to expand each bracket and then, simplify by collecting like terms:
[tex]\begin{gathered} 4r-s-r-2s-5r+3s \\ 4r-r-5r-s-2s+3s \\ -2r-3s+3s \\ -2r \end{gathered}[/tex]That is the simplified form.