4. Solve the following equations:
(a) 10p = 100
(b) 10p + 10 = 100
(c) p /4 = 5
(d) – p/3 = 5
(e) 3 p/4 = 6
(f) 3s = –9
(g) 3s + 12 = 0
(h) 3s = 0
(i) 2q = 6
(j) 2q – 6 = 0
(k) 2q + 6 = 0
(l) 2q + 6 = 12
(a) Divide both sides by 10, we get :
(b) Transposing 10 to the RHS, we get :
Now, dividing both sides by 10 gives :
(c) Multiplying both sides by 4, we have :
(d) Multiplying both sides by - 3 , we have :
(e) Multiplying both sides by , we have :
(f) Dividing both sides by 3, we have :
(g) Transposing 12 to the RHS and then dividing both sides by 3, we have :
(h) Dividing both sides by 3, we get :
(i) Dividing both sides by 2, we get :
(j) Transposing - 6 to the RHS and then dividing both sides by 2, we get :
(k) Transposing 6 to the RHS and then dividing both sides by 2, we get :
(l) Transposing 6 to the RHS and then dividing both sides by 2, we get :