Answer:
27
Step-by-step explanation:
So we have the expression:
[tex]-9y+9x[/tex]
And we want to evaluate it when x is -3 and y is -6.
So, substitute:
[tex]=-9(-6)+9(-3)[/tex]
Multiply:
[tex]=54-27[/tex]
Subtract:
[tex]=27[/tex]
And we're done!
