3x+5=0
3x=0-5
3x=-5
Divide both sides by 3
-1.6666.......
Hope it helps.
As for mod 9, I don't understand.
False - plug in the bramble for the first equation and you get 40 = 12 which is not true
U have to put a number between it
131,132,133,134,135,136,137,138,139
8 (3)-10
24-10=14
Hope this helped :)
