ANSWER:
[tex]-22x-15[/tex]STEP-BY-STEP EXPLANATION:
We have the following expression:
[tex]-\mleft(7x+6\mright)+3\mleft(-5x-3\mright)[/tex]We solve and reduce like terms, just like this:
[tex]\begin{gathered} -7x-6-15x-9 \\ (-7x-15x)+(-6-9) \\ (-22x)+(-15)=-22x-15 \end{gathered}[/tex]