1.)Write an expression that uses parentheses and is equivalent to 14x+5x-4x+15
2.)Write an expression that contains a multiplication operation and is equivalent to 50t+60t+100
3.) Write an expression that uses subtraction and is equivalent to 63r+13r+15
4.) Write an expression that does not use addition and is equivalent to 3.2t+2.6t+ 7.6t
5.) Write an expression that uses parentheses and is equivalent to 13y + 25 +1
if it say high school mathematics it's not it's middle school