1. 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

Answers (1)

(a) Add 1 to both the sides, we have :

                               x\ =\ 1

(b)  Transpoing 1 to the RHS, we have :

                                x\ =\ -\ 1

(c)  Transposing - 1 to the RHS, we have :

                               x\ =\ 6

(d)  Transposing 6 to the RHS, we get :

                               x\ =\ -\ 4

(e) Transposing  - 4 to the RHS, we have :

                               y\ =\ -\ 3

(f) Transposing - 4 to  the RHS, we get :

                               y\ =\ 8

(g)  Transposing 4 to  the RHS, we get :

                               y\ =\ 0

(h) Transposing 4 to  the RHS, we get :

                               y\ =\ -\ 8

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