Solve the following equation by trial and error method: 2x - 3 = … - Vidyadip

Question

Solve the following equation by trial and error method:
$2x - 3 = 9$

✓

Answer

The given equation is $2x - 3 = 9$
We guess and try several values of $x$ to find $L.H.S.$ and $R.H.S.$ and stop when $L.H.S. = R.H.S.$

x	L.H.S.	R.H.S.
$3$	$2 \times 3 - 3 = 3$	$9$
$4$	$2 \times 4 - 3 = 5$	$9$
$5$	$2 \times 5 - 3 = 7$	$9$
$6$	$2 \times 6 - 3 = 9$	$9$

When $x = 6$, we have $L.H.S. = R.H.S$
So, $x = 6$ is the solution of the given equation.

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