We have this expression and we have to simplify it:
[tex]\begin{gathered} -7+(-3)x+5+(-6)x \\ -7+5-3x-6x \\ -2+\left(-3-6\right)x \\ -2-9x \end{gathered}[/tex]The answer is c. -2-9x
2) Simplify:
[tex]\begin{gathered} 7(7-3x)+6(x-6) \\ 7\cdot7+7\cdot(-3x)+6\cdot x+6\cdot(-6) \\ 49-21x+6x-36 \\ (-21+6)x+13 \\ -15x+13 \end{gathered}[/tex]
