book Maths Puzzle Numerical Ability

Help me solve the following equation for the variable x: 4xz=p

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Here is another one I can't figure out as well. The point (1,2) has the distance ? from the line defined by {{{y=-(x/3)+1}}} I tried finding a solver on the site to find the reciprocal for this question.
y^2+5y-9 / y^2-9y+3
This is a bit tricky.
I simply dont understand it.