Q.1 Given 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

(a) x-1=0
= x – 1 + 1 = 0 + 1

= x = 1
(b) x + 1 = 0
Or, x=0-1 = -1
(c) x-1=5
Or, x= 5+1 = 6
(d) x+6= 2
Or, x=2-6= -4
(e) y-4 =-7
Or, y=-7+4=-3
(f) y-4=4
Or, y=4+4=8
(g) y+4=4
Or, y=4-4=0
(h) y+4=-4
Or, y=-4-4=-8