计算

$(_{1})\:\sqrt{1-\dfrac{9}{25}}+\sqrt{0.04}+\sqrt[3]{(-2)^{3}}+|\dfrac{1}{4}-|$
$(2)\begin{cases}2x-3y=1\\\dfrac{y+1}{4}=\dfrac{x+2}{3}\end{cases}$

$(3)-\dfrac{\sqrt{27}\times\sqrt{12}}{\sqrt{3}}+(\sqrt{7}+\sqrt{3})(\sqrt{7}-\sqrt{3})$