$11.$ Solve the following problems.
$\left(a\right)$ The sum of a number and $13$ is $32.$ Find the number.
(b) $b\right)$ The difference between x and $9$ $is$ $16,$ and x is greater than $9$
Find the value of $x$
(C) A number is multiplied by 5 and then divided by $6$ The result $1s$
$15$ Find the ทนmber.
$\left(O\right)$ $8$ is subtracted from a number, then divided by $4$ The result $1S$
$6.$ Find the nนmber,