Question

$2(x+6)=19$
Is the solution of the equation 3?

• A. yes
• B. no
• C. cannot be determined

Answer 1

The correct option is B no

$2(x+6)=19$

To check whether $x=3$ is the solution of the given equation or not, we put $x=3$ into the equation and check that both sides are equal.

If they are equal, then the given solution is correct. If not, then the solution is wrong.

$L.H.S.=2(x+6)=2(3+6)$
$=2\times 9$
$=18$

$R.H.S.=19$

$\because L.H.S\ne R.H.S$
Hence, $x=3$ is not a solution of the given equation.