Question

Solve the equation $x+7=13$ by the trial and error method

Answer 1

Solving the equation

A statement of equality which involves one or more variables is called an equation.

Given equation is $x+7=13$.

RHS of the equation is a whole number .

In LHS, a whole number $7$ is added to a number $x$.Thus we need to guess several values of $x$ to find the values of LHS that becomes equal to RHS.

$\mathit{x}$	LHS	RHS
$x$	$x+7$	$13$
$1$	$1+7=8$	$13$
$2$	$2+7=9$	$13$
$3$	$3+7=10$	$13$
$4$	$4+7=11$	$13$
$5$	$5+7=12$	$13$
$6$	$6+7=13$	$13$

For $x=6$,LHS$=$RHS.

Thus $x=6$ is the solution of the equation.

Hence the solution of the equation $x+7=13$ is $x=6$