Here it goes, please help with all questions, thank you <3

Solve the equation x/4 - 5= -8 -27 -12 -7 12

Plz hurry evaluate the expression a+b where a=8 and b=19

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?