Answer:
The value of the expression is;
[tex]-80[/tex]
Explanation:
Given the expression;
[tex]2(9x-10y)[/tex]
we want to evaluate the value of the expression at;
[tex]\begin{gathered} x=-10 \\ y=-5 \end{gathered}[/tex]
substituting the values into the expression:
[tex]\begin{gathered} 2(9x-10y)=2(9(-10)-10(-5)) \\ =2(-90+50) \\ =2(-40) \\ =-80 \end{gathered}[/tex]
Therefore, the value of the expression is;
[tex]-80[/tex]
