Y/3 -4 = 2 What does Y equal?

Solve 2x+y=3 x+y=5 in substitution method

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.

Which expression converts 45 degree to radians