Question 36: Find x knowing \(\frac{{4 – x}}{{30}} = \frac{{27}}{{ – 5}}\)

\(\begin{aligned} &\frac{{4 – x}}{{30}} = \frac{{27}}{{ – 5}}\\ & – 5\left( {4 – x} \ right) = 27.30\\ & – 5\left( {4 – x} \right) = 810\\ &4 – x = 810:\left( { – 5} \right)\\ &4 – x = – 162\\ &x = 4 – \left( { – 162} \right)\\ &x = 166 \end{aligned}\)