Question

Check my answer?

Answer 1

this one i think is c

because: -36x = 9(x+10)
-27 x = 90
= - 3.333 so {-3/10}
am i correct ?

Answer 2

looks good to me

Answer 3

-36x = 9(x+10)
-36x = 9x + 90
-36x - 9x = 90
-45x = 90
x = 90/-45 = -2