(a) Given:
The expressions are:
[tex]\begin{gathered} -8a+6b \\ +4a-4b \end{gathered}[/tex]
To add the given expressions:
ADDITION is as follows:
Thus, we have
[tex]\begin{gathered} -8a+6b+(+4a-4b)=(-8+4)a+(6-4)b \\ -8a+6b+(+4a-4b)=-4a+2b \end{gathered}[/tex]
The answer is:
[tex]-4a+2b[/tex]
