[tex]( {5}^{2} )^{14} \div {25}^{12} - 5 \times ( {55}^{1} + x \div 5) - {5}^{2} = [/tex]
[tex] = {5}^{28} \div {5}^{24} - 5(55 + \frac{1}{5} x) - 25 = [/tex]
[tex] = {5}^{4} - 5(55 + \frac{1}{5} x) - 25 = [/tex]
[tex] = {5}^{4} - 275 - x - 25 = [/tex]
[tex] = 625 - 275 - x - 25 = [/tex]
[tex] = 325 - x[/tex]
