Alright because of P.E.M.D.A.S we want to start with the paranthesis but there is nothing we can do so we move on to exponents. 4^2 is 16
16(20-×)-8(x+3)=8 we need to distribute the numbers in front of the paranthesis across both number inside them. 320-16x-8x-24=8 now combine like terms 296-24x=8 now we need to isolate the variable so subtract 296 from both sides. -24x=-288 now divide both sides by -24 x= 12