Give first the step you will use to separate the variable and then solve the equation
(a) `x-1=0,`
(b) `x+1=0,`
(c) `x-1=5,`
(d) `x+6=2`
(e) `y-4=-7,`
(f) `y-4=4,`
(g) `y+4=4,`
(h) `y+4=-4`