X-85=156 what is x equal to? or supposed to be. whichever. what is x? pls help me:))

Aiden buys two bags of chips at $1.09 each and a 20 ounce soda for $1.20 at the gas station.he knows that the state tax is 5.5. how much change will he receive from a $5 bill?

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?