first in this you need to get rid of the 6 by the x, since its 6 times x you need to divide it by 6 to remain with x, you must do this on both sides to make it fair. you will remain with x < 4. 2 would then be the only answer to make it true.
Well combine: 2x + 3x + x + 60 = 180 combine like terms: 6x + 60 =180 then move the 60: 6x = -120 now divide both sides by 6: x= -20 i hope this helped! :)