Question

1 by 2-3x=0 solutions the equations and check the result

Answer 1

X=2/3

1/2-3.2/3

=1/2-2

=1/0

=0

therefore x=2/3

Answer 2

Here is your answer
$\frac{1}{2} - 3x = 0 \\ 3x = \frac{1}{2} \\ x = \frac{1}{2 \times 3} \\ x = \frac{1}{6} \\ now \: check \\ \frac{1}{2} - 3 \times \frac{1}{6} \\ = \frac{1}{2} - \frac{1}{2} \\ = 0 \: \: \: \: hence \: proved$
Hope it helps you