[tex]\text{Hey there!}[/tex]
[tex]\mathsf{9x+7x+8-7x-9}[/tex]
[tex]\mathsf{Combine\ your\ like\ terms}[/tex]
[tex]\mathsf{Like\ terms \ \#1: 9x,7x, \ \& \ -7x}[/tex]
[tex]\mathsf{Like\ terms\ \#2: 8\ \& \ -9}[/tex]
[tex]\mathsf{(9x+7x-7)+(8-9)}[/tex]
[tex]\mathsf{Now\ solve!}[/tex]
[tex]\mathsf{9x+7x-7x}\\\mathsf{9x+7x=16x}\\\mathsf{16x-7x=9x}\\\mathsf{\underline{=9x}}[/tex][tex]\leftarrow\mathsf{left\ value}[/tex]
[tex]\mathsf{8-9=-1}\\\mathsf{\underline{=-1}}[/tex][tex]\leftarrow{\mathsf{right\ value}}[/tex]
[tex]\mathsf{Finally\ we\ have\ the\ answer\ to\ your\ question!}[/tex]
[tex]\boxed{\boxed{\huge\text{\bf{Answer:9x - 1}}}}\checkmark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{LoveYourselfFirst:)}[/tex]
