Question

4. Solve the following equations and verify your answers:
(1) 3 (x + 7) = 18
(ii) 2 (x - 1) = x + 2

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Answer 1

Answer:

1. 3x+21=54

3x=54-21

x=33/3

x=11

Verification:-

3(11+7)=54

33+21=54

54=54

Hence verified.

2. 2x-2=x+2

2x-x=2+2

x=4

Verification:-

2(4-1)=4+2

8-2=6

6=6

Hence verified.

Answer 2

ANSWER

i).3(x + 7)=18

=3x + 21=18

3x=18-21

3x= -3

x=-3/3

=-1 answer

ii). 2(x - 1)=x + 2

=2x - 2=x + 2

=2x - x=2+2

3x= 4

x=4/3

x= 1.9