Question

-11x+33=99

Answer 1

You need to isolate the x from the rest of the numbers.
so you have to do the opposite of PAMDAS
so undo any addition/ Subtraction
-11x+33=99. ( you have to subtract 33 first to the both side.)
-11x +33-33=99-33
-11x=66
then do the undo any multiplication and division
\[\frac{ -11x }{-11 } = \frac{ 99 }{ -11 }\]

Answer 2

which will give you x only on one side.
x= -9

Answer 3

-11x=99-33

-11x=66

x= 66/(-11)

x= -6

Answer 4

oops i forgot to subtract when i divided XD thank you @jhonyy9 for answering the question, that i had made a mistake on.