Question

0.5y-1-(2y+4)=y

Answer 1

$0.5y-1-(2y+4)=y$
$5y-10-20y-40 = 10y$
$-50 = 25y$
$y = -2$

Answer 2

0.5y-1-2y-4-y=0
-2,5y=5
y=-2