The given expression:
[tex]-7\times7+9\times\frac{-1}{-1}[/tex]Apply BODMAS Rule : Brackets, Of, Division, Multiplication, Addition, Subtraction
According to BODMAS rule, we first simplify division:
[tex]-7\times7+9\times\frac{-1}{-1}=-7\times7+9\times1[/tex]Simplify multiplication:
[tex]-7\times7+9\times1=-49+9[/tex]Simplify addition:
[tex]-7\times7+9\times\frac{-1}{-1}=-40[/tex]Answer: -40
