Question

Solve the following equation by trial and error method:
$5p+2=17$

Answer 1

We use trial and error method,

$5p+2=17$

Put, $p=0$

$5\left(0\right)+2=17$

=> $2\ne 17$

Put, $p=1$

$5\left(1\right)+2=17$

=> $7\ne 17$

Put, $p=2$

$5\left(2\right)+2=17$

=> $12\ne 17$

Put, $p=3$

$5\left(3\right)+2=17$

=> $17=17$

Hence $p=3$