Solve for x (x-2)+10=12

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

41/17 as a decimal rounded to the nearest hundredth

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.