A train travels at a constant speed of 80 miles per hour. How many miles will the train travel in 15 minutes?

-5y - 9 = -(y - 1)

First, simplify your brackets. / Your problem should look like: 
Second, regroup the terms. / Your problem should look like: 
Third, add 5y to both sides. / Your problem should look like: 
Fourth, simplify 1 - y + 5y to 1 + 4y. / Your problem should look like: 
Fifth, subtract 1 from both sides. / Your problem should look like: 
Sixth, subtract -9 - 1 to get -10. / Your problem should look like: 
Seventh, divide both sides by 4. / Your problem should look like: 
Eighth, simplify  to  / Your problem should look like: 
Ninth, switch your sides. / Your problem should look like: 

y = 
Answer as decimal: y = -2.5