2. Give first the step you will use to separate the variable and then solve the equation:

(a) 3l = 42

(b) b / 2 = 6

 (c) p /7 = 4

(d) 4x = 25

(e) 8y = 36

(f) z/ 3 = 5 /4

 (g) a /5 =7/ 15

 (h) 20t = – 10

Answers (1)

(a) Divide both sides by 3, we get :

                                          l\ =\ 14

(b) Multiply both sides by 2, we get :

                                         b\ =\ 12

(c) Multiply both sides by 7, we get :

                                        p\ =\ 28

(d) Divide both sides by 4, we get  :

                                       x\ =\ \frac{25}{4}

(e) Divide both sides by 8, we get :

                                       y\ =\ \frac{9}{2}

(f) Multiply both sides by 3, we get   :

                                      z\ =\ \frac{15}{4}

(g) Multiply both sides by 5, we get :

                                      a\ =\ \frac{7}{3}

(h) Divide both sides by 20, we get  :

                                      t =\ -\frac{1}{2}      

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