-3(x-3)= -9

So we'd solve this like

-3(x-3)= -9   (now out here we will first multiply -3 by x and -3 )

-3x - 9 = - 9         (and now we will take -9 to the other side with -9 to put like terms together)

-3x = -9 -9          ( and now we would add the two -9's and also put the minus sign)

-3x = -18           (now we will take -3 to the other side and divide it by -18 which will then give us our x and also we will cut the two minus signs while dividing the two)

x = -18 / -3         (now simply divide)

x = 6      ANSWER

i hope uve understood by now but if not then pls be free to ask!

hope this helps!