Question

solve the following equation by trial and error method:
(a) 2p-3=15
(b) 3x+14=14
(c)5p-16=69
(d) 6m+13=1​

Answer 1

Step-by-step explanation:

a) 2p-3 = 15

p=6

2(6) -3 = 9

p=7

2(7)-3 = 11

p=8

2(8)-3 = 13

p=9

2(9)-3 = 15

therefore, p = 9

b) 3x+14=14

× =1

3(1)+14 = 17

×= -1

3(-1)+14 = 11

× = 0

3(0)+14 = 14

therefore x= 0

c) 5p-16=69

p= 15

5(15)-16 = 59

p= 16

5(16) - 16 = 64

p = 17

5(17)-16 = 69

therefore p= 17