Answer
$$x=\frac{11p+11k}{10-a}$$
Work Step by Step
$$9x-11k-11p=xa-x$$
$$9x-xa+x=11p+11k$$
$$10x-xa=11p+11k$$
$$x(10-a)=11p+11k$$
$$x=\frac{11p+11k}{10-a}$$
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