Question

hey I'm kinda I keep on getting 0.833333 but I'm solving it on something ellse and getting -1 [12-[x+3]=10] btw that's the question

Answer 1

12 - (x+3) = 10

12 -x -3 = 10

9 -x = 10

-x = 10-9 = 1

x = -1