5 - 3y less than equal to - y - 15
Add 3y to both sides
5 less than equal to - y - 15 + 3y
Simplify
5 less than equal to 2y - 15
Add 15 to both sides
5 + 15 less than equal to 2y
20 less than equal to 2y
Divide both sides by 2
20/2 less than equal to y
10 less than equal to y
y great than equal to 10