Question

Solve the equation by trial and error method $x+6=9$

Answer 1

Trial and error method: Using this method we have to put the various trial values of $x$so as to get a solution

For equation $x+6=9$

$x$	LHS $=x+6$	RHS
$0$	$0+6=6$	$9$
$1$	$1+6=7$	$9$
$2$	$2+6=8$	$9$
$3$	$3+6=9$	$9$

As, $x=3$ satisfies the equation

Therefore, $x=3$ is the solution of given equation.