Question 2:
[tex]9K-2K+5+7=[/tex]Let us simplify the above expression
The terms are already combined so we just need to simplify them
[tex]\begin{gathered} 9K-2K+5+7 \\ 7K+5+7 \\ 7K+12 \end{gathered}[/tex]Question 3:
[tex]3-5y+6=[/tex]Let us simplify the above expression
Combine the like terms together and simplify
[tex]\begin{gathered} 3-5y+6 \\ 3+6-5y \\ 9-5y \end{gathered}[/tex]Question 4:
[tex]7r-r=[/tex]Let us simplify the above expression
Simply subtract r from 7r
[tex]\begin{gathered} 7r-r \\ 6r \end{gathered}[/tex]Therefore, the simplified expressions are
[tex]\begin{gathered} 2.\: \: 9K-2K+5+7=7K+12 \\ 3.\: \: 3-5y+6=9-5y \\ 4.\: \: 7r-r=6r \end{gathered}[/tex]
