-(5/4y + 20) + 2 = 4/y + 5
becomes -5/4y - 20 + 2 = 4/y + 5
combine like terms on the left
-5/4y - 18 = 4/y + 5
multiply by y
-5/4 - 18y = 4 + 5y
subtract 5y from both sides
-23y - 5/4 = 4
add 5/4 to both sides
-23y = 21/4
divide both sides by -23
y = - 21/92