Question

Q4: Solve the following by trial and error method: (a) 5 p + 2 =12
(b) 2 (m – 3) = 6
(c) 3 + 2 = 3
(d) 3 - 5k = -12​

Answer 1

Step-by-step explanation:

(a) 5 p + 2 =12

5p = 12-2

5p = 10

p = 10/5

p = 2

(b) 2 (m – 3) = 6

2m-6 = 6

2m = 6+6

2m = 12

m = 12/2

m = 6

(c) 3s + 2 = 3

3s = 3- 2

3s = 1

s= 1/3

(d) 3 - 5k = -12

-5k = -12 -3

-5k = -15

k = -15/ -5

k = -3